How to make
Spread the tray with oil in which the sandwiches will be baked. Arrange the bread slices and lightly grease them and then spread the tomato puree on them.
Arrange the sausages (cut into circles) and then add the mushrooms and white cheese. Grate the yellow cheese on top and sprinkle them with savory herb.
Bake them in a moderately heated oven until they're ready.
Enjoy your meal!