Toast bread in the toaster until golden brown. Wash the tomato, grate dry and cut into slices. Cut cheese into 4 slices. Wash basil, shake dry and scrape leaves off the stalks.
Wash the fillet, dab dry and cut into 8 medallions weighing about 50 g. Season with salt. Brush a grill pan with oil. Fry medallions in the hot pan for 1-2 minutes on each side. Take them out and season with pepper.
Cover a slice of toast with 2 slices of tomatoes, 2 medallions and a slice of cheese. Cover the rest of the toast in the same way. Gratinate in the preheated oven on the grill step (240 °C) for about 2 minutes until the cheese melts.
Garnish ready-baked toasts with basil.