1. Peel and steam the sweet potatoes, celeriac, and onions. Once cooked, roughly mash the sweet potatoes with a potato masher, season with salt, pepper, and add nutmeg and olive oil.
2. To make the vegetable cream, blend the cooked celeriac and onions with 1 glass of cooking water, morga, olive oil, salt, and pepper. Set aside.
3. In a pan or wok, sauté the thinly sliced green cabbage with a clove of garlic, salt, pepper, and olive oil.
4. Cook the lentils according to the package instructions. Layer the mixture, starting with lentils, then the green cabbage topped with some celeriac sauce, and finish with the sweet potatoes. Bake in the oven for 15 minutes at 180°C and add cheese for gratin, according to taste.
5. Meanwhile, cook the veal escalopes in a pan with olive oil.