01 - Remove beef tenderloin steaks from the refrigerator 30 minutes before cooking to temper. Pat steaks dry thoroughly and season both sides generously with kosher salt and black pepper.
02 - Heat olive oil in a large skillet over medium-high heat until shimmering. Sear the steaks for 3-4 minutes per side for medium-rare doneness. Transfer to a plate, tent loosely with aluminum foil, and let rest.
03 - In the same skillet, reduce heat to medium. Add butter and minced shallots; sauté for 2 minutes until softened and translucent. Add minced garlic and peppercorns; cook for 1 minute, stirring constantly to prevent burning.
04 - Remove skillet from heat source and carefully add brandy to prevent flare-ups. Return to heat and simmer, scraping up browned bits from the pan bottom, until liquid reduces by half (approximately 2 minutes).
05 - Stir in heavy cream, Dijon mustard, and Worcestershire sauce. Simmer gently for 3-5 minutes, stirring occasionally, until sauce thickens and coats the back of a spoon. Season with salt to taste.
06 - Return rested steaks to the pan and spoon the warm peppercorn sauce over the top. Heat through for 1 minute. Serve immediately, garnished with additional peppercorns if desired.