Potato Pups 8 Hot dogs 2 cups Mashed potatoes 1/2 teaspoon Dry mustard Preheat oven to 375. Split hot dogs lenghthwise not quite all the way through. Fill split opening with mashed potatoes mixed with dry mustard. Sprinkle with paprika. Bake for 15 minutes, or until heated through and slightly browned on top. Can also be topped with grated cheddar or parmesan cheese.