01 - Remove beef tenderloin steaks from the refrigerator 30 minutes before cooking to temper. Pat dry thoroughly and season both sides with salt and 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, adjusting time for desired doneness. Transfer to a plate and tent loosely with foil to rest.
03 - Reduce heat to medium in the same skillet. Add butter and shallots; sauté for 2 minutes until softened. Add garlic and peppercorns; cook for 1 minute, stirring constantly.
04 - Off the heat, carefully add brandy. Return to heat and simmer, scraping up any browned bits, until reduced by half (about 2 minutes).
05 - Stir in heavy cream, Dijon mustard, and Worcestershire sauce. Simmer gently for 3–5 minutes, stirring occasionally, until thickened. Season with salt to taste.
06 - Return steaks to the pan, spoon sauce over, and warm through for 1 minute. Serve immediately, garnished with extra peppercorns if desired.