1 lb. ground beef
2 tbsp. onion, chopped
2 c. mashed potatoes
1/2 c. grated cheddar cheese
Salt & pepper to taste

Preheat oven to 400 degrees. Brown beef and onion in skillet, salt and pepper to taste. Layer into bottom of casserole dish, cover with mashed potatoes and top with grated cheese. Place in oven for 15 to 20 minutes or until cheese is thoroughly melted.