The onion referred to in the directions is not listed in the ingredients. There are many sizes and types of onions. It probably doesn't really make a difference, but just thought I'd let you know. Skaz
Brown ground beef and onion, drain. Add brown sugar and spaghetti sauce and heat through.
Spoon a thin layer of sauce over the bottom of a sprayed slow cooker. Add a single layer of frozen ravioli (do not thaw). Cover with half the remaining sauce, then half the cheese. Repeat layers (you will probably have a few ravioli left over).
Cover and cook on high 3 to 4 hours or until very hot and cheese has melted. Makes 8 to 10 servings.