Name: Flank Steak With Mustardy Onions And Rosemary Recipe
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Yield: 4
Cuisine: American
Ingredients: 1¾ lb flank steak; kosher salt; freshly ground black pepper; 1 tbsp olive oil; 1 small yellow onion; 1 clove garlic; 1 small sprig fresh rosemary; 2 tbsp dijon mustard; ½ cup water; Potato

Transform your dinner into a flavorful experience with flank steak paired with mustardy onions and fragrant rosemary. This dish balances the robust flavor of the steak with the tangy, savory mustard sauce, making it a perfect choice for any special occasion or a delightful weeknight meal.

Photos of Flank Steak With Mustardy Onions And Rosemary Recipe

One ingredient you might not have on hand is fresh rosemary, which adds a unique, piney aroma to the dish. Dijon mustard is another key component, providing a tangy depth to the sauce. Ensure you have these on your shopping list when you head to the supermarket.

Ingredients for Flank Steak with Mustardy Onions and Rosemary

Flank steak: A lean and flavorful cut of beef that cooks quickly and is perfect for this recipe.

Kosher salt: Essential for seasoning and enhancing the natural flavors of the steak.

Freshly ground black pepper: Adds a bit of heat and complexity to the seasoning.

Olive oil: Used for cooking the steak and sautéing the onions, it adds a rich, fruity flavor.

Yellow onion: When caramelized, it brings a sweet and savory depth to the sauce.

Garlic: Adds a robust, aromatic flavor to the sauce.

Fresh rosemary: Infuses the dish with a woody, aromatic essence.

Dijon mustard: Provides a tangy, sharp kick to the sauce, complementing the flavors of the steak and onions.

Water: Used to deglaze the pan and create a base for the sauce.

Potato: A versatile side that pairs perfectly with the rich, savory steak.

One reader, Adlai Nation says:

This flank steak with mustardy onions and rosemary is a game-changer! The flavors meld perfectly, and the mustard sauce adds a delightful tang. Easy to make and absolutely delicious. Highly recommend!

Adlai Nation

Cooking Techniques for Flank Steak with Mustardy Onions and Rosemary

How to season steak: Season the steak on both sides with kosher salt and freshly ground black pepper. How to heat oil: Heat the olive oil in a large cast iron skillet over medium-high heat until it shimmers. How to cook steak: Add the steak to the skillet and cook, undisturbed, until browned on the bottom, 5 to 6 minutes. Flip and cook on the other side for 4 minutes for medium-rare doneness, or until cooked to your liking. How to caramelize onions: Return the skillet to medium heat and add the onion, garlic, and rosemary. Cook, stirring to scrape up any browned bits from the bottom of the pan, until the onion is soft and caramelized, about 6 minutes. How to make mustard-onion sauce: Stir in the mustard and water, bring to a simmer, and cook until the sauce thickens, 3 to 4 minutes. How to slice steak: Thinly slice the steak against the grain for tenderness. How to serve: Spoon the mustard-onion sauce over the meat and garnish with more rosemary leaves. Serve with potatoes or pasta alongside.

How To Make Flank Steak With Mustardy Onions And Rosemary

Flank steaks are lean meats that when not cooked properly end up being tough and hard to chew. Our flank steak recipe makes the cooking simple and easy.

Preparation: 15 minutes

Cooking: 20 minutes

Total: 35 minutes

Serves:

Ingredients

1 ¾lbflank steak
kosher saltto taste
freshly ground black pepperto taste
1tbspolive oil
1small yellow onionthinly sliced lengthwise
1clovegarlic
1small sprig fresh rosemaryminced, plus more for garnish
2tbspdijon mustard
½ cup water
potatoor paste, for serving, cooked

Instructions

Season the steak on both sides with salt and pepper.
Heat the olive oil in a large cast iron skillet over medium-high heat.
Add the steak and cook, undisturbed, until browned on the bottom, 5 to 6 minutes. Flip and cook on the other side for 4 minutes for medium-rare doneness, or until cooked to your liking. Transfer the steak to a plate.
Return the skillet to medium heat and add the onion, garlic, and rosemary. Cook, stirring to scrape up any browned bits from the bottom of the pan, until the onion is soft and caramelized, about 6 minutes.
Stir in the mustard and water, bring to a simmer, and cook until the sauce thickens, 3 to 4 minutes. Remove the skillet from the heat and season with salt and pepper.
Thinly slice the steak. Spoon the mustard-onion sauce over the meat and garnish with more rosemary leaves. Serve with potatoes or pasta alongside.
Enjoy!

Nutrition

Calories: 797.71kcal
Fat: 41.38g
Saturated Fat: 16.16g
Trans Fat: 0.00g
Monounsaturated Fat: 17.99g
Polyunsaturated Fat: 1.97g
Carbohydrates: 3.91g
Fiber: 1.30g
Sugar: 0.83g
Protein: 97.04g
Cholesterol: 308.44mg
Sodium: 1681.55mg
Calcium: 153.28mg
Potassium: 1572.56mg
Iron: 7.51mg
Vitamin A: 2.34µg
Vitamin C: 1.76mg

Pro Tip for Perfecting Flank Steak with Mustardy Onions

When cooking flank steak, ensure it is at room temperature before searing. This helps achieve an even cook and better caramelization. Additionally, let the steak rest after cooking to allow the juices to redistribute, resulting in a more flavorful and tender piece of meat.

Time-Saving Tips for Preparing This Steak Recipe

Pre-chop ingredients: Dice the onion and mince the garlic ahead of time to streamline the cooking process.

Marinate in advance: Season the flank steak with salt and pepper a few hours before cooking to enhance flavor and save time.

Use a food processor: Quickly chop the onion and garlic using a food processor to reduce prep time.

Preheat the skillet: Ensure the cast iron skillet is hot before adding the steak to achieve a perfect sear faster.

Batch cook sides: Prepare potatoes or pasta in larger quantities to have them ready for multiple meals.

Substitute Ingredients For Flank Steak With Mustardy Onions And Rosemary Recipe

flank steak - Substitute with skirt steak: Skirt steak has a similar texture and flavor profile, making it a great alternative for flank steak.
kosher salt - Substitute with sea salt: Sea salt can be used in the same quantity and provides a similar taste and texture.
freshly ground black pepper - Substitute with white pepper: White pepper offers a slightly different flavor but can still provide the necessary heat and spice.
olive oil - Substitute with grapeseed oil: Grapeseed oil has a high smoke point and a neutral flavor, making it a good alternative for olive oil.
yellow onion - Substitute with shallots: Shallots have a milder and sweeter flavor, which can add a different but pleasant taste to the dish.
garlic - Substitute with garlic powder: Garlic powder can be used in place of fresh garlic, though it will provide a slightly different texture and intensity.
fresh rosemary - Substitute with dried rosemary: Dried rosemary can be used in smaller quantities as it has a more concentrated flavor.
dijon mustard - Substitute with whole grain mustard: Whole grain mustard has a similar tangy flavor but with a different texture due to the mustard seeds.
water - Substitute with chicken broth: Chicken broth adds more depth of flavor compared to plain water.
potato - Substitute with sweet potato: Sweet potatoes offer a different flavor and nutritional profile, adding a touch of sweetness to the dish.

Presenting Flank Steak with Mustardy Onions and Rosemary

Select the finest cut of flank steak: Ensure the flank steak is of the highest quality, with a rich marbling and deep red color. This will enhance both the flavor and presentation.
Season meticulously: Generously season the flank steak with kosher salt and freshly ground black pepper on both sides to bring out its natural flavors.
Achieve a perfect sear: Heat olive oil in a large cast iron skillet until it shimmers. Sear the steak undisturbed to develop a deep, caramelized crust, ensuring a visually appealing and flavorful exterior.
Caramelize the onions: Thinly slice the yellow onion and cook it with garlic and a sprig of fresh rosemary in the same skillet. Allow the onions to soften and caramelize, creating a rich, aromatic base for the sauce.
Create a luxurious mustard sauce: Stir in dijon mustard and water, then simmer until the sauce thickens to a velvety consistency. This will add a tangy, creamy element to the dish.
Slice the steak with precision: Thinly slice the steak against the grain to ensure tenderness. Arrange the slices elegantly on the plate for a refined presentation.
Artfully spoon the sauce: Generously spoon the mustard-onion sauce over the sliced steak, ensuring each piece is coated with the rich, flavorful sauce.
Garnish with fresh rosemary: Finish the dish with a sprinkle of fresh rosemary leaves for a burst of color and an aromatic touch that complements the flavors.
Pair with a refined side: Serve the flank steak with a side of perfectly roasted potatoes or al dente pasta, arranged neatly to enhance the overall presentation.
Plate with elegance: Use a clean, white plate to contrast the rich colors of the steak and sauce. Arrange the components thoughtfully to create a visually stunning dish that will impress even the most discerning culinary professionals.

Essential Kitchen Tools for Making This Steak Dish

Cast iron skillet: Essential for achieving a good sear on the steak and for cooking the onions and sauce evenly.
Tongs: Useful for flipping the steak without piercing it, which helps retain its juices.
Chef's knife: Necessary for slicing the onion, garlic, and steak.
Cutting board: Provides a stable surface for chopping the onion and garlic and slicing the steak.
Measuring spoons: Ensures accurate measurement of the olive oil and mustard.
Measuring cup: Used to measure the water for the sauce.
Plate: For resting the steak after cooking, allowing the juices to redistribute.
Wooden spoon: Ideal for stirring the onions and scraping up browned bits from the skillet.
Potato peeler: If you choose to serve the steak with potatoes, this will help peel them.
Pot: For boiling potatoes if you decide to serve them as a side dish.
Colander: Useful for draining boiled potatoes.
Serving platter: To present the sliced steak and mustard-onion sauce elegantly.

Storing and Freezing Instructions for Flank Steak with Onions

Let the flank steak cool completely before storing it in an airtight container or wrapping it tightly with plastic wrap. Refrigerate for up to 3-4 days.
Store the mustardy onion sauce separately in an airtight container in the refrigerator for up to 3-4 days.
To freeze the flank steak, wrap it tightly in plastic wrap, followed by a layer of aluminum foil. Label the package with the date and freeze for up to 2-3 months.
The mustardy onion sauce can also be frozen in an airtight container for up to 2-3 months. Thaw it in the refrigerator overnight before reheating.
To reheat the flank steak, let it thaw in the refrigerator overnight if frozen. Preheat the oven to 350°F (175°C) and wrap the steak in aluminum foil. Heat for 10-15 minutes or until warmed through.
Reheat the mustardy onion sauce in a saucepan over low heat, stirring occasionally, until heated through. Add a splash of water or beef broth if the sauce has thickened too much.
When reheating, be careful not to overcook the flank steak, as it can quickly become tough and dry. Aim for just warming it through to maintain its tenderness and flavor.

How To Reheat Leftover Flank Steak and Onions

Preheat your oven to 350°F (175°C). Place the leftover flank steak in an oven-safe dish, and cover it with foil. Heat the steak in the oven for about 10-15 minutes, or until it reaches your desired temperature. This method helps to retain the steak's moisture and prevent it from drying out.
For a quicker reheating option, use a microwave. Place the flank steak on a microwave-safe plate and cover it with a damp paper towel. Heat the steak in 30-second intervals, checking the temperature after each interval, until it reaches your desired warmth. Be careful not to overheat the steak, as it can quickly become tough and dry in the microwave.
To reheat the mustardy onions and rosemary sauce, place them in a small saucepan over low heat. Stir the sauce occasionally until it's heated through. If the sauce appears too thick, you can add a splash of water or beef broth to thin it out and restore its original consistency.
If you have a sous vide machine, you can use it to reheat the flank steak to perfection. Place the steak in a vacuum-sealed bag and submerge it in a water bath set to your desired temperature (around 130°F or 54°C for medium-rare). Heat the steak for about 30 minutes, or until it's warmed through. This method ensures that the steak is evenly heated and maintains its original texture and doneness.
For a delicious twist on leftovers, slice the cold flank steak thinly and serve it over a bed of mixed greens. Warm up the mustardy onions and rosemary sauce and drizzle it over the steak and greens for a tasty, refreshing salad. This option is perfect for a light lunch or dinner, especially during warmer months.

Interesting Fact About Flank Steak

A random fact about this recipe is that flank steak is a lean cut of beef that benefits from marinating or being paired with flavorful sauces like the mustardy onions and rosemary in this dish.

Budget-Friendly Flank Steak Recipe for Home Cooking

This flank steak with mustardy onions and rosemary recipe is moderately cost-effective. The main expense is the flank steak, but the other ingredients like onion, garlic, and potatoes are relatively inexpensive. Considering the flavor and satisfaction it provides, it’s a good value for a special meal. Overall Verdict: 7/10. Approximate cost for a household of 4 people: $25-$30 USD.

Is This Steak Recipe Healthy or Unhealthy?

The flank steak with mustardy onions and rosemary recipe is a relatively healthy dish, but there are a few aspects that could be improved:

The recipe uses olive oil, which is a healthy fat, but the amount could be reduced to lower the overall calorie content.
Flank steak is a lean cut of beef, providing protein and iron. However, red meat should be consumed in moderation due to its potential links to heart disease and other health issues.
The onions and garlic offer some nutritional benefits, such as vitamins and antioxidants.
The Dijon mustard adds flavor without significantly increasing the calorie count.
The recipe suggests serving with potatoes or pasta, which can add significant carbohydrates and calories to the meal.

To make this recipe even healthier, consider the following suggestions:

Reduce the amount of olive oil used in cooking the steak and onions.
Opt for a whole grain or legume-based pasta alternative, or serve with a side of roasted vegetables instead of potatoes.
Include a larger portion of non-starchy vegetables, such as a side salad or roasted green beans, to increase the fiber and nutrient content of the meal.
Use a low-sodium Dijon mustard to reduce the overall sodium content.
Trim any excess fat from the flank steak before cooking to lower the saturated fat content.
Consider using a cast iron skillet for cooking, as it can add small amounts of iron to the food.

Editor's Opinion on Flank Steak with Mustardy Onions and Rosemary

This flank steak recipe is a delightful blend of robust flavors and simplicity. The mustardy onions and rosemary create a savory, aromatic sauce that complements the steak beautifully. Cooking the steak to medium-rare ensures it remains juicy and tender. The caramelized onions add a touch of sweetness, while the Dijon mustard introduces a tangy depth. Serving it with potatoes or pasta rounds out the meal perfectly. This dish is both elegant and comforting, making it suitable for a weeknight dinner or a special occasion.

Enhance Your Flank Steak With Mustardy Onions And Rosemary Recipe with These Unique Side Dishes:

Roasted Brussels Sprouts with Balsamic Glaze: Imagine the crispy, caramelized edges of brussels sprouts, kissed by a tangy balsamic glaze. These little green gems will add a delightful crunch and a burst of flavor to your flank steak feast.

Garlic Mashed Potatoes: Creamy, buttery mashed potatoes infused with the rich aroma of garlic. This classic side dish will soak up the mustardy onion sauce, creating a harmonious blend of textures and flavors.

Grilled Asparagus with Lemon Zest: Tender asparagus spears, lightly charred on the grill and finished with a sprinkle of fresh lemon zest. This vibrant side dish adds a refreshing, zesty contrast to the hearty flank steak.

Herbed Quinoa Salad: A light and fluffy quinoa salad, bursting with fresh herbs like parsley and mint, and dotted with juicy cherry tomatoes. This side dish offers a nutritious and colorful complement to your meal.

Honey-Glazed Carrots: Sweet and tender carrots, glazed with a luscious honey coating and a hint of thyme. These vibrant orange beauties will add a touch of sweetness and elegance to your flank steak dinner.

Similar Recipes to Try If You Like This Flank Steak Dish

Grilled Ribeye With Garlic Herb Butter: Indulge in a succulent ribeye steak grilled to perfection and topped with a rich garlic herb butter. This dish is a carnivore's dream, offering a burst of flavors with every bite. Serve it with a side of roasted vegetables or a creamy mashed potato for a complete meal.

Rosemary Garlic Lamb Chops: Savor the tender and juicy lamb chops marinated in a fragrant blend of rosemary, garlic, and olive oil. These chops are seared to perfection, creating a crispy exterior while keeping the inside moist and flavorful. Pair them with a side of roasted potatoes or a fresh salad.

Mustard Glazed Pork Tenderloin: Experience the perfect balance of sweet and tangy with this pork tenderloin glazed in a dijon mustard and honey mixture. The tenderloin is roasted until juicy and tender, making it an ideal centerpiece for any dinner. Complement it with roasted vegetables or a wild rice pilaf.

Balsamic Glazed Chicken Thighs: Delight in the rich and savory flavors of chicken thighs glazed with a balsamic vinegar reduction. These thighs are pan-seared to achieve a crispy skin and then finished in the oven for a tender and juicy interior. Serve with mashed potatoes or a side of steamed broccoli.

Herb Crusted Salmon: Enjoy a healthy and flavorful meal with this salmon fillet crusted with a blend of fresh herbs and breadcrumbs. The salmon is baked to perfection, offering a crispy exterior and a moist, flaky interior. Pair it with a quinoa salad or roasted asparagus for a nutritious dinner.

Appetizer and Dessert Ideas to Serve with Flank Steak

Appetizers:

Stuffed Mushrooms: Delight your guests with these Stuffed Mushrooms, a perfect start to any meal. Large mushroom caps are filled with a savory mixture of breadcrumbs, Parmesan cheese, and fresh herbs. A touch of garlic and lemon zest adds a burst of flavor, while a drizzle of olive oil ensures a golden, crispy top. Serve these bite-sized delights warm, and watch them disappear in no time.

Bruschetta: Transport your taste buds to Italy with Bruschetta. Crispy toasted baguette slices are topped with a vibrant mix of diced tomatoes, fresh basil, and mozzarella. A splash of balsamic vinegar and a sprinkle of sea salt elevate the flavors, making each bite a delightful combination of textures and tastes. Perfect for a summer evening, this appetizer is as beautiful as it is delicious.

Desserts:

Chocolate Lava Cake: Indulge in the rich and decadent chocolate lava cake that oozes molten chocolate with every bite. This dessert is a perfect balance of a slightly crisp exterior and a gooey, flowing center. Serve it warm with a scoop of vanilla ice cream or a dollop of whipped cream to complement the intense chocolate flavor. Garnish with a sprinkle of powdered sugar and a few fresh berries for a touch of elegance. Ideal for a romantic dinner or a special celebration, this dessert will leave your guests in awe.

Lemon Meringue Pie: Delight your taste buds with a zesty and refreshing lemon meringue pie. The tart lemon curd filling is perfectly balanced by a sweet and fluffy meringue topping, all nestled in a buttery pie crust. Serve chilled for a refreshing end to your meal. The contrast of textures and flavors makes this dessert a crowd-pleaser. Garnish with a twist of lemon zest and a few mint leaves for a visually appealing presentation. This dessert is perfect for spring and summer gatherings, offering a burst of citrusy goodness.

Why trust this Flank Steak With Mustardy Onions And Rosemary Recipe:

This recipe for flank steak with mustardy onions and rosemary is a surefire hit. The combination of dijon mustard and caramelized onions creates a rich, savory sauce that perfectly complements the tender, juicy steak. The addition of fresh rosemary adds an aromatic touch that elevates the dish. With simple, easy-to-follow instructions, this recipe ensures a restaurant-quality meal right in your own kitchen. Trust in the quality of ingredients and the straightforward method to deliver a delicious and satisfying dinner.

Share your thoughts on this flank steak with mustardy onions and rosemary recipe in the Recipe Sharing forum section.

FAQ:

How do I know when the steak is cooked to my liking?

I usually use a meat thermometer to check the internal temperature. For medium-rare, aim for 130-135°F. If you prefer it more done, just cook it a bit longer.

Can I use a different type of mustard?

Absolutely! If you don't have Dijon mustard, you can use whole grain mustard or even spicy brown mustard. It will slightly change the flavor, but it should still be delicious.

What kind of potatoes should I serve with this dish?

I like to use baby potatoes or Yukon Golds. You can roast them with some olive oil, salt, and pepper, or even mash them if you prefer.

Can I make the mustard-onion sauce ahead of time?

Yes, you can make the sauce ahead of time and reheat it when you're ready to serve. Just store it in an airtight container in the fridge for up to 2 days.

Is there a substitute for fresh rosemary?

If you don't have fresh rosemary, you can use dried rosemary. Just remember that dried herbs are more concentrated, so use about a third of the amount.