Peel the onion and carrot, wash the bell pepper and zucchini, dice everything.
Heat 1 tablespoon of oil in a pan and simmer the diced vegetables in it for about 5 minutes. Crumble the feta cheese, stir with sour cream into the vegetable mixture and season with salt and pepper.
Heat the rest of the oil in a saucepan. Peel and squeeze the garlic and sauté in the oil for approx. Deglaze with the tomatoes, let simmer for approx. 5 minutes and season.
Layer alternately vegetables, lasagne plates, tomato sauce, lasagne plates, vegetables, lasagne plates, etc. in a baking dish, finish with tomato sauce. Sprinkle with cheese and bake for approx. 40 minutes in a preheated oven at 180 ° C.