Place chili sauce and grape jelly in the crockpot. Stir to combine.
Add the frozen meatballs. Stir to coat.
Place the lid on the slow cooker and cook on low 3 hours or until heated through.
Turn heat to low/warm to keep hot while serving at the party.
Enjoy!
Notes
Make sure you find plain chili sauce and not Sriracha hot chili sauce or Thai sweet chili sauce. They will be SUPER SPICY!
Want to switch it up a little? Try barbecue sauce. Combine the grape jelly and bbq sauce as directed above.
If using pre-made frozen meatballs, just be sure the package states that they are fully cooked. Otherwise you will have to cook them first.
Don't want to make them in a slow cooker? Make the sauce in a large pot on the stove top over medium heat, add the meatballs, and cook until heated through.
You can even bake them in the oven. Combine all the ingredients in a 9x13 baking dish, cook at 350F for 45 minutes to 1 hour. Remove and enjoy!