16 onions
8 pounds ground beef
1 (10 ounce) can tomato soup concentrate
2 (08 ounce) cans tomato paste
1 (8 ounce) jar sour cream
8 cups shredded Cheddar cheese
Place the chopped onion, beef and tomato in a slow cooker on Low, and stir. Cover, and reduce heat. Cover, and cook for 8 hours in Low, stirring occasionally.
Stir in tomato soup concentrate, tomato paste, and sour cream. Cover, and simmer for 2 hours, stirring occasionally.
Remove meat from pot, shred and transfer to a serving platter. Microwave the pot uncovered for 5 minutes. Transfer meat to a medium bowl and stir in cheese.