Cut the carrot into thick diagonal slices. Cut kohlrabi and potatoes into slices. Grease a small ovenproof dish. Add vegetables and potatoes
Whisk milk and egg. Season with salt and pepper and pour over the vegetables. Sprinkle with cheese. Bake the vegetable casserole in a preheated oven (electric cooker: 200 °C/ convection oven: 175 ° C/ gas: level 3) for approx. 15 minutes. Chop parsley finely and sprinkle over the casserole