From: Grandma Sheila, COOKING echo Split hot dogs the long way not quite all the way through. Fill split opening with mashed potatoes mixed with dry mustard. Sprinkle the top with paprika. Bake in 375 degree oven for about 15 minutes or until heated through and slightly browned on top. Can also be topped with some grated cheese (cheddar or parmesan). These make a great lunch or dinner for kids. Mine used to ask for them regularly still do now that they are grown.