Peel and wash the potatoes. Clean and wash the zucchini. Slice both. Drain tomatoes and cut into fine strips. Peel and chop the onions
Layer the potatoes and zucchini in a greased gratin dish. Stir tomatoes and half onions into the cream, season. Spread over the potatoes and zucchini
Grate the cheese and bake in the preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for approx. 45 minutes
Heat the oil. Brown the lentils and the rest of the onions in it. Deglaze with 100 ml water. Cook for about 5 minutes. Add vinegar and sugar, season. Clean, wash and chop the salad. Mix with the lentil vinaigrette. Serve everything
Drink: Wine spritzer