Beef Medallions & Mushroom Sauce with Mashed Potatoes

Beef Medallions & Mushroom Sauce

with Mashed Potatoes

40 MIN
2 Servings
Wellness at Blue Apron
Find recipes that suit your lifestyle with our new nutritionist-approved dietary tags.
Vegetarian
These recipes don’t contain meat, poultry, fish, or seafood.* They’re made with fruits and vegetables, grains, legumes, nuts, and seeds. *Select artisanal cheeses may contain animal-derived rennet.
Carb Conscious
These meals have 48g or less of net carbs (total carbs minus dietary fiber) per serving. They replace refined carbohydrates from sources like white flour, rice, and cane sugar with high-fiber foods like fresh vegetables, fruits, and whole grains.
600 Calories Or Less
Coming in at 600 calories or less per serving, these recipes are ideal for those choosing to monitor their caloric intake without sacrificing flavor. The US Food & Drug Administration uses 2000 calorie daily intake for general advice. The 600 calorie cap equates to 30% of the total 2000 calories per day based on 3 meals per day with 200 calories remaining for snack or beverage.
Wellness Grain
These recipes feature grains such as barley, quinoa, farro, orzo, couscous and more, handpicked by our Culinary team in collaboration with our Registered Dietitian.
Pescatarian
These recipes feature a wide array of nutritious seafood options like salmon, cod, tilapia, crab, and shrimp. While these dishes never contain meat, pork or poultry, they may contain animal derived ingredients such as milk, butter, cheese and/or honey.
To view a recipe's full nutrition information, head to your Upcoming page at blueapron.com, click on a specific recipe, then head to the Nutrition tab and select 'View Full Nutrition.' Nutrition Facts Panels are available up to 1.5 weeks in advance

From the Test Kitchen

In this easy recipe, inspired by steak Diane (an American restaurant classic), we’re searing beef medallions, then using the fond in the pan to make a rich, bright mushroom sauce for spooning on top. Garlic mashed potatoes and sautéed kale make for delicious, simple sides.

Get Plans
  • Nutrition
    PER SERVING
  • Calories
    700 Cals (est.)
View Full Nutrition
Nutrition Label
Download
fresh
ingredients
Beef Medallions & Mushroom Sauce with Mashed Potatoes
Title
  • 4 Beef Medallions
  • 4 oz Cremini Mushrooms
  • 2 cloves Garlic
  • ¾ lb Yukon Gold Potatoes
  • 1 bunch Kale
  • 1 Shallot
  • 2 Tbsps Butter
  • 1 Tbsp Dijon Mustard
  • 2 Tbsps Verjus Blanc
Prepare the ingredients:
1 Prepare the ingredients:

Heat a medium pot of salted water to boiling on high. Wash and dry the fresh produce. Large dice the potatoes. Peel the garlic. Using the flat side of your knife, smash 1 clove to flatten. Roughly chop the remaining clove. Peel and thinly slice the shallot. Remove and discard the stems of the kale; roughly chop the leaves. Thinly slice the mushrooms.

Cook & mash the potatoes:
2 Cook & mash the potatoes:

Add the diced potatoes and smashed garlic to the pot of boiling water and cook 13 to 15 minutes, or until tender when pierced with a fork. Turn off the heat. Drain thoroughly and return to the pot. Add half the butter and a drizzle of olive oil. Using a fork, mash to your desired consistency. Season with salt and pepper to taste. Cover to keep warm.

Cook the kale:
3 Cook the kale:

While the potatoes cook, in a large pan, heat 2 teaspoons of olive oil on medium-high until hot. Add the sliced shallot; season with salt and pepper. Cook, stirring occasionally, 1 to 2 minutes, or until softened. Add the chopped kale and 1/4 cup of water; season with salt and pepper. Cook, stirring frequently, 3 to 4 minutes, or until the kale has wilted and the water has cooked off. Transfer to a bowl and season with salt and pepper to taste. Cover with aluminum foil to keep warm. Rinse and wipe out the pan.

Cook the beef:
4 Cook the beef:

While the potatoes continue to cook, pat the beef dry with paper towels. Season with salt and pepper on both sides. In the same pan, heat 1 tablespoon of olive oil on medium-high until hot. Add the seasoned beef and cook 2 to 3 minutes per side for medium-rare, or until browned and cooked to your desired degree of doneness. Leaving any browned bits (or fond) in the pan, transfer to a plate and let rest for at least 5 minutes.

Make the mushroom sauce:
5 Make the mushroom sauce:

While the beef rests, add a drizzle of olive oil to the pan of reserved fond and heat on medium-high until hot. Add the sliced mushrooms in an even layer. Cook, without stirring, 2 to 3 minutes, or until browned. Add the chopped garlic; season with salt and pepper. Cook, stirring frequently, 1 to 2 minutes, or until softened and fragrant. Add the mustard, verjus, and 2 tablespoons of water (be careful, as the liquid may splatter); season with salt and pepper. Cook, stirring frequently and scraping up any fond, 30 seconds to 1 minute, or until thoroughly combined. Turn off the heat and stir in the remaining butter until melted. (If the sauce seems too thick, gradually add up to 2 tablespoons of water to achieve your desired consistency.) Season with salt and pepper to taste.

Serve your dish:
6 Serve your dish:

Serve the rested beef with the mashed potatoes and cooked kale. Top the beef and potatoes with the mushroom sauce. Enjoy!

Tips from Home Chefs

Prepare the ingredients:
1 Prepare the ingredients:

Heat a medium pot of salted water to boiling on high. Wash and dry the fresh produce. Large dice the potatoes. Peel the garlic. Using the flat side of your knife, smash 1 clove to flatten. Roughly chop the remaining clove. Peel and thinly slice the shallot. Remove and discard the stems of the kale; roughly chop the leaves. Thinly slice the mushrooms.

2 Cook & mash the potatoes:

Add the diced potatoes and smashed garlic to the pot of boiling water and cook 13 to 15 minutes, or until tender when pierced with a fork. Turn off the heat. Drain thoroughly and return to the pot. Add half the butter and a drizzle of olive oil. Using a fork, mash to your desired consistency. Season with salt and pepper to taste. Cover to keep warm.

Cook & mash the potatoes:
Cook the kale:
3 Cook the kale:

While the potatoes cook, in a large pan, heat 2 teaspoons of olive oil on medium-high until hot. Add the sliced shallot; season with salt and pepper. Cook, stirring occasionally, 1 to 2 minutes, or until softened. Add the chopped kale and 1/4 cup of water; season with salt and pepper. Cook, stirring frequently, 3 to 4 minutes, or until the kale has wilted and the water has cooked off. Transfer to a bowl and season with salt and pepper to taste. Cover with aluminum foil to keep warm. Rinse and wipe out the pan.

4 Cook the beef:

While the potatoes continue to cook, pat the beef dry with paper towels. Season with salt and pepper on both sides. In the same pan, heat 1 tablespoon of olive oil on medium-high until hot. Add the seasoned beef and cook 2 to 3 minutes per side for medium-rare, or until browned and cooked to your desired degree of doneness. Leaving any browned bits (or fond) in the pan, transfer to a plate and let rest for at least 5 minutes.

Cook the beef:
Make the mushroom sauce:
5 Make the mushroom sauce:

While the beef rests, add a drizzle of olive oil to the pan of reserved fond and heat on medium-high until hot. Add the sliced mushrooms in an even layer. Cook, without stirring, 2 to 3 minutes, or until browned. Add the chopped garlic; season with salt and pepper. Cook, stirring frequently, 1 to 2 minutes, or until softened and fragrant. Add the mustard, verjus, and 2 tablespoons of water (be careful, as the liquid may splatter); season with salt and pepper. Cook, stirring frequently and scraping up any fond, 30 seconds to 1 minute, or until thoroughly combined. Turn off the heat and stir in the remaining butter until melted. (If the sauce seems too thick, gradually add up to 2 tablespoons of water to achieve your desired consistency.) Season with salt and pepper to taste.

6 Serve your dish:

Serve the rested beef with the mashed potatoes and cooked kale. Top the beef and potatoes with the mushroom sauce. Enjoy!

Serve your dish:
Browse Steps
1 of 6