1 lb. hamburger
1 onion, chopped
2 cans tomato soup
2 cans string beans, or 2 pt. jars, reserving 1/2 c. liquid
Leftover mashed potatoes
Milk to moisten potatoes
1 egg
Salt & Pepper to taste

Brown hamburger and onion. Add soup and beans, including 1/2 cup liquid. Mix potatoes, milk and egg together. Put hamburger mixture into 9"x13" pan. Dab potatoes on top. Brown in 350 degree oven for 20 to 30 minutes.