1 lb. hamburger meat
1/4 c. chopped onion
1 egg, slightly beaten
1/2 tsp. salt
1 (14 3/4 oz.) can spaghetti and tomato sauce with cheese

Heat oven to 350 degrees. Lightly grease 8-inch square baking dish. Toss together all ingredients until combined. Turn into prepared pan and press down with back on spoon. Bake uncovered for 1 hour. Let stand a few minutes before cutting into squares.