Beef Filets With Cognac Mushroom Onion Sauce Recipe

Ingredients for Beef Filets With Cognac Mushroom Onion Sauce

• Beef Tenderloin Steaks
• 1/2 teaspoon salt (or 1/4 teaspoon kosher salt)
• Coarse Black Pepper
• Canola Oil
• 2 tablespoons butter
• Yellow Onion
• Red Onion
• Green Onion
• 2 shallots, minced
• Button Mushrooms
• Garlic Cloves
• 1/4 cup cognac
• Low Sodium Beef Broth
• Fresh Ground Black Pepper
• Fresh Parsley

How to Make Beef Filets With Cognac Mushroom Onion Sauce

1. Preheat oven to 400°F (200°C).
2. Season beef filets generously with 1/2 teaspoon salt (or 1/4 teaspoon kosher salt) and 1/2 teaspoon black pepper.
3. Heat 1 tablespoon of olive oil in an oven-safe skillet (cast iron is ideal) over medium-high heat. Sear filets for 3 minutes per side, until nicely browned.
4. Remove filets from skillet and set aside, reserving pan drippings.
5. Add 2 tablespoons of butter to the skillet and melt over medium-high heat.
6. Add 1 medium yellow onion, thinly sliced, and 1/2 medium red onion, thinly sliced. Sauté for 5 minutes until softened.
7. Add 2 green onions, thinly sliced; 2 shallots, minced; 8 ounces cremini mushrooms, sliced; and 2 cloves garlic, minced.
8. Continue sautéing for 15 minutes, or until vegetables are lightly browned and softened.
9. Pour in 1/4 cup cognac and 1/2 cup beef broth. Stir constantly until the liquid reduces and slightly thickens (about 5 minutes).
10. Return beef filets to the skillet, placing them on top of the onion mixture.
11. Cover the skillet tightly with aluminum foil.
12. Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until a meat thermometer inserted into the thickest part of the filet registers 135°F (57°C) for medium-rare (adjust cooking time for your desired doneness).
13. Remove skillet from oven. Remove filets from the skillet and loosely cover them to rest for 10 minutes.
14. Return the skillet with the onion mixture to the stovetop over medium heat.
15. Cook, stirring constantly, for 5 minutes, or until the sauce has reduced and thickened to your desired consistency.
16. Season the sauce with salt and pepper to taste.
17. Serve the beef filets immediately, spooning the delicious cognac mushroom onion sauce generously over the top.