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5.0 from 24 votes

Filet Steaks and Mushroom Sauce

Tender and juicy filet mignon is covered in a flavorful mushroom sauce and all made in one skillet for fast cleanup. Ready in just 30 minutes.

Prep Time
10 mins
Cook Time
10 mins
Total Time
35 mins
Servings: 4 -6
Calories: 585 kcal
Course: Main Course
Cuisine: American

Ingredients

  • 2 tbsp olive oil divided
  • 4-6 (6 oz each) filets mignon steaks (about 1 1/2" thick), at room temp (or your favorite steak cut)
  • 1 small yellow onion finely diced
  • 1 lb baby brown mushrooms cleaned
  • 2-4 medium garlic cloves minced
  • 1 cup low sodium beef broth
  • 1 tbsp fresh thyme chopped
  • 1 tbsp balsamic vinegar
  • 1/2 cup almond milk or 2% milk
  • 1 tbsp cornstarch or flour
  • kosher salt and pepper to taste

Instructions

    Cup of Yum
  1. Pat dry the steaks with a paper towel then rub with salt and pepper on both sides.
  2. Heat the oil in a large skillet over medium-high heat. Add steaks with plenty of space in between, or cook in batches.
  3. Allow the filets to cook undisturbed for 2-4 minutes per side (for medium-rare), or cook to your liking.
  4. Once the steak is done, set aside on a plate and cover to keep warm.
  5. To the same preheated pan add the remaining oil. Sautee the onions for 2-3 minutes. Add in the mushrooms and garlic and continue to cook stirring frequently for 3-4 minutes.
  6. Stir in the broth and thyme; allow it to bubble until liquid is reduced by half, 5-7 minutes.
  7. In a small bowl whisk well the almond milk and cornstarch.
  8. Add the cornstarch mixture to the pan and whisk until sauce thickens, 2-3 minutes. Stir in the balsamic vinegar.
  9. Return the beef to the pan and spoon over the sauce, keeping it on the heat for 1-2 minutes, more, or until just heated through.
  10. Garnish with fresh thyme and serve immediately.

Notes

  • Filet mignon: A lighter colored filet will have more fat marbling, which means it will be more tender and flavorful. 
  • Mushrooms: Baby Bella or cremini mushrooms are best. 
  • Beef broth: You can substitute with 1 beef bouillon cube (or 1 tsp of granules) dissolved in 1 cup of hot water. 
  • Thyme: Fresh thyme will add the best flavor. You can also use fresh rosemary. 
  • Almond milk: You can substitute with cashew milk for a dairy-free option or regular milk for a dairy option. 
  • Cooking tips: Start with room temperature steak, which will cook more accurately. Also, cook the steak with as little movement as possible to allow it to form a good crusty sear.
  • Filet mignon: A lighter colored filet will have more fat marbling, which means it will be more tender and flavorful. 
  • Mushrooms: Baby Bella or cremini mushrooms are best. 
  • Beef broth: You can substitute with 1 beef bouillon cube (or 1 tsp of granules) dissolved in 1 cup of hot water. 
  • Thyme: Fresh thyme will add the best flavor. You can also use fresh rosemary. 
  • Almond milk: You can substitute with cashew milk for a dairy-free option or regular milk for a dairy option. 
  • Cooking tips: Start with room temperature steak, which will cook more accurately. Also, cook the steak with as little movement as possible to allow it to form a good crusty sear.

Nutrition Information

Calories 585kcal (29%) Carbohydrates 11g (4%) Protein 35g (70%) Fat 45g (69%) Saturated Fat 16g (80%) Cholesterol 119mg (40%) Sodium 825mg (34%) Potassium 1204mg (34%) Fiber 2g (8%) Sugar 3g (6%) Vitamin A 176IU (4%) Vitamin C 8mg (9%) Calcium 93mg (9%) Iron 5mg (28%)

Nutrition Facts

Serving: 4-6

Amount Per Serving

Calories 585

% Daily Value*

Calories 585kcal 29%
Carbohydrates 11g 4%
Protein 35g 70%
Fat 45g 69%
Saturated Fat 16g 80%
Cholesterol 119mg 40%
Sodium 825mg 34%
Potassium 1204mg 26%
Fiber 2g 8%
Sugar 3g 6%
Vitamin A 176IU 4%
Vitamin C 8mg 9%
Calcium 93mg 9%
Iron 5mg 28%

* Percent Daily Values are based on a 2,000 calorie diet.