Wash pork medallions, dab dry, season with salt and pepper. Heat the oil in a pan and fry the medallions for about 8 minutes, turning them over. In the meantime, wash and clean the tomatoes and cut them into 1 cm thick slices. Cut out round circles from the toast slices with a cookie cutter (approx. 6 cm Ø). Then roast them in a toaster until golden brown. Remove the medallions from the pan and place them on a baking tray. Put 1 tomato slice on each medallion.
Season with salt and pepper. Cut the cheese into about 8 pieces and cover the medallions with them. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 5 minutes. Cover 1 toast circle with 1 lettuce leaf and 1 medallion each and add 1 teaspoon of ketchup each. Garnish with sprouts and cover with 1 toast circle each. Put approx. 1 teaspoon of ketchup on each burger. Arrange on a plate