Preheat the oven to 180 ° C. Peel the onion and cut into cubes. Clean and wash the leek and cut into half rings. Wash the zucchini and tomatoes, cut in half and also cut the zucchini into slices.
Heat the oil in a pan and fry the onion cubes in it. Add the minced meat and fry well. Add the leek and zucchini and sauté. Pour in the tomatoes, fold in the cherry tomatoes, season with salt and cayenne pepper.
Put the potato noodles in portion casserole dishes and pour the sauce over them.
Sprinkle the casseroles with cheese and bake in the preheated oven for 15-20 minutes (gas: level 3, convection 160 ° C).