Take a large pan. Set half of the potato-onion mix to the bottom of the pan. Add ham and vegetables and the rest of the potato-onion mixture to the pan. Sprinkle salt and black pepper and add cream. Put the pan in the oven and bake it at 225 degrees. After 30 minutes, take a pan out of the oven. Press the food, that all potatos is under the cream. Bake another 30 minutes and enjoy your lovely meal.