Peel, wash and slice the potatoes and carrots. Peel and chop the onion. Clean and wash the spinach, fry with the onion in hot oil
Put everything in a greased casserole dish. Whisk cream and egg, season. Add cheese and sesame seeds. Bake in a hot oven (electric cooker: 200 °C/ convection oven: 175 °C / gas: level 3) for approx. 30 minutes