This is as easy as they come:
1 bag frozen Italian meatballs
1 12-oz jar chili sauce
1 12-oz jar grape jelly
Heat the chili sauce and grape jelly together to help them melt, then pour over thawed Italian meatballs. You can either microwave them when ready to serve or do like I do - put them in a crockpot on low and heat them for 3-4 hours and serve straight from the crockpot. This sounds too simple to be true but I get raves everytime I take them somewhere.
