1. Heat oven to 450degreesF. Brown ground beef with onion in large nonstick skillet over medium heat 8 to 10 minutes or until beef is not pink, breaking beef up into 3/4-inch crumbles. Pour off drippings. Stir in gravy and peas; season with pepper.
2. Spoon beef mixture into 2-quart baking dish. Top with potatoes, spreading evenly;sprinkle with cheese, if desired. Bake in 450degreesF oven 25 to 30 minutes or until bubbly and cheese begins to brown.
Cook's Tip: Any type of prepared mashed potatoes may be used in this recipe: instant,refrigerated, frozen or homemade.
Photo and Recipe Courtesy of The Beef Checkoff