1 tbsp. cooking oil
1 lb. ground beef
1 med. onion, chopped
1 tsp. salt
1/4 tsp. pepper
3 c. mashed potatoes
1 c. shredded cheddar cheese

Heat oil in skillet, over medium-high heat. Saute beef and onion until onion is transparent and beef is browned. Stir in salt and pepper. Put mixture in a 1 1/2 quart ungreased baking dish. Spread mashed potatoes on top of mixture, then sprinkle cheese on top. Bake at 375 degrees for 30 minutes or until cheese is bubbly. Serves 5 to 6.