22 individual beef wellingtons Recipes

filet mignon, salt, pepper, vegetable oil, mushrooms, chopped, onion, finely chopped, butter, italian seasoned breadcrumbs, puff pastry, frozen and thawed, egg white, beaten

shallot, unsalted butter, olive oil, divided, beef tenderloin steaks or 4 (4 1/2 oz) filet mignon, each 1 inch thick, kosher salt, fresh ground black pepper, grainy mustard, grated gruyere cheese, divided, flour , for rolling out pastry, sheet puff pastry, thawed (from a 17.3-oz package), egg, beaten, fleur de sel , maldon salt or other coarse salt