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Beef Tenderloin with Mushroom Sauce

Beef Tenderloin with Mushroom Sauce

with Roasted Brussels Sprouts & Couscous
4.5(1.1K)
Recipe Development Team
Recipe Development TeamUpdated on January 19, 2026
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Calories
580 kcal
Protein
40g protein
Difficulty
Easy
Allergens:
  • Wheat
  • Milk
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.
serving amount

½ cup

Israeli Couscous

(Contains: Wheat)

2 tablespoon

Sour Cream

10 ounce

Beef Tenderloin Steak

8 ounce

Brussels Sprouts

1 unit

Beef Demi-Glace

(Contains: Milk)

1 clove

Garlic

2 tablespoon

Garlic Herb Butter

(Contains: Milk)

4 ounce

Button Mushrooms

/ per serving
Calories580 kcal
Fat26 g
Saturated Fat11 g
Carbohydrate48 g
Sugar8 g
Dietary Fiber6 g
Protein40 g
Cholesterol120 mg
Sodium590 mg
Potassium1150 mg
Calcium60 mg
Iron6 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.
Baking Sheet
Medium Pot
Large Pan
Paper Towel

Cooking Steps

Prep
1

Adjust rack to top position and preheat oven to 425 degrees. Wash and dry all produce. Trim and halve Brussels sprouts lengthwise. Trim and thinly slice mushrooms. Peel and mince or grate garlic.

Cook Brussels Sprouts & Couscous
2

Toss Brussels sprouts on a baking sheet with a drizzle of oil, salt, and pepper; arrange cut sides down. Roast on top rack until browned and tender, 20-25 minutes. Meanwhile, melt 1 TBSP plain butter in a medium pot over medium-high heat. Add couscous and cook until toasted, 1-2 minutes. Stir in ¾ cup water (1½ cups for 4 servings) and a big pinch of salt. Bring to a boil, then cover and reduce heat to low. Cook until couscous is tender, 6-8 minutes. Keep covered off heat until ready to serve.

Cook Steak
3

While couscous cooks, pat beef dry with paper towels; season all over with salt and pepper. Heat a large drizzle of oil in a large pan over medium-high heat. Add beef and cook to desired doneness, 4-7 minutes per side. Remove from pan and set aside to rest.

Cook Mushrooms
4

Heat a drizzle of oil in same pan over medium-high heat. Add mushrooms and cook, stirring, until softened and lightly browned, 3-4 minutes. Add garlic and cook until fragrant, 1 minute.

Make Sauce
5

Stir demi-glace and ¼ cup water (⅓ cup for 4 servings) into pan with mushroom mixture, scraping up any browned bits from bottom of pan. Bring to a simmer, then reduce heat to medium and cook until thickened, 2-3 minutes. Turn off heat; stir in sour cream and 1 TBSP plain butter until melted. Season with salt and pepper.

Serve
6

Fluff couscous with a fork; stir in garlic herb butter and season with salt and pepper. Divide Brussels sprouts, couscous, and beef between plates. Top beef with sauce and serve.