Toast with beef fillet

Slice the speck and heat to transparency in a pan (preferably with a Teflon coating). Place the speck from the pan on a paper towel to stack the fat. Rinse the pieces of beef fillet, dry with a napkin, beat slightly, pepper well. Fry quickly in vegetable oil on both sides, reduce the heat to a weak one and simmer for 4 minutes, salt. Fry slices of bread until brown, spread with mustard, put a piece of fillet and 3 pieces of speck on each. Spread the speck with butter with spicy herbs, put slices of cheese on top. Bake in the oven, preheated to 220 degrees, until the cheese melts.