Peel and finely dice the garlic and onions. Clean and wash the zucchini and mushrooms. Scald tomatoes hot, rinse and peel the skin. Halve the tomatoes. Thinly slice zucchini and mushrooms, cut tomatoes into slices. Heat oil in a pan, fry garlic and onions in it. Cut vegetables and roast pork into strips, add and steam for 1-2 minutes.
Herb leaves, except for some marjoram for garnishing, pluck from the stems, chop roughly and add to the vegetables. Season to taste with salt and pepper. Lightly toast bread from one side. Cover the untoasted side with the vegetables. Coarsely grate the cheese and sprinkle on top. Bake under the preheated grill until golden brown. Serve garnished with marjoram