Wild West Casserole

1 onion, chopped
1 1/2 pounds ground chuck, browned and drained
6 medium potatoes. sliced
1 can red beans
1 can tomatoes mixed with 2 tablespoons flour or 1 can tomato soup

Put chopped onion in the bottom of the crock pot; layer with browned ground beef, sliced potatoes, and beans. Spread tomato mixture or soup over all. Sprinkle with seasonings as desired. Cover and cook on LOW for 7 to 9 hours.

Serves 4 to 6.