You can never have too many classic, standby recipes! This mashed potato topped pie is full of savory Ground Beef, peas and onions in a beefy gravy.
Preheat oven to 450°F. Heat large nonstick skillet over medium heat until hot. Add Ground Beef and onion; cook 8 to 10 minutes, breaking into 3/4-inch crumbles and stirring occasionally. Remove from skillet with slotted spoon; pour off drippings. Return beef to skillet; stir in gravy and peas and season with pepper.
Spoon beef mixture into 2-quart baking dish. Top with potatoes, spreading evenly; sprinkle with cheese, if desired. Bake in 450°F oven 25 to 30 minutes or until bubbly and cheese begins to brown.