Wash, clean and peel the carrots. Zucchini wash, clean and peel. Peel and wash potatoes. Cut everything into thin slices. Grease 4 gratin dishes (each 12 cm Ø; 350 ml content), put vegetable slices in them.
Season the creme fines with salt, pepper and nutmeg and pour over the vegetables. Sprinkle with cheese. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 150 °C/ gas: level 3) for 35-40 minutes. Serve garnished with marjoram.