Tenderloin Medallion with Mustard & Tarragon Sauce

Tenderloin Medallion with Mustard & Tarragon Sauce
  • 4 buffalo tenderloin medallions
  • 1½ tablespoon cooking oil
  • ¼ cup chopped shallots
  • 1 cup beef stock
  • ½ cup dry white wine
  • ¼ cup brandy or more white wine
  • ½ cup whipping cream
  • 2 tablespoons butter
  • 2 garlic cloves, chopped
  • 3 5-ounce bags baby spinach
  • 2 tablespoons whole grain Dijon mustard
  • 1 tablespoon chopped fresh tarragon
  1. Heat 1 tablespoon oil in heavy saucepan over medium-high heat. Add shallots; cover and cook until soft and brown, about 3 minutes. Add stock, wine and brandy. Boil until slightly reduced, about 6 minutes. Add cream and boil until reduced to ¾ cup, about 6 more minutes. Set sauce aside.
  2. Melt butter in heavy large skillet over medium-high heat. Add garlic and sauté 1 minute. Add 1 bag of spinach and toss until slightly wilted, about 1 minute. Add remaining spinach and toss just until wilted, about 2 minutes. Season to taste with salt and pepper. Set aside.
  3. Heat remaining ½ tablespoon oil in another heavy large skillet over high heat. Sprinkle steaks with salt and pepper. Sauté to desired doneness, about 4 minutes per side for rare.
  4. Divide spinach among serving plates. Place 1 steak on each mound of spinach. Add sauce, mustard and tarragon to skillet where steaks were cooked; boil until slightly thickened, scraping the bottom of the pan, about 1 minute. Season sauce with salt and pepper. Spoon sauce over steaks and serve.