In a large mixing bowl, whisk together grape jelly and chili sauce.
Place meatballs into an oven-safe heavy cast iron pot (Dutch oven recommended) with a lid. Cover them with the grape jelly and chili sauce mixture.
Cover the pot with the lid and place into the oven. Cook for 30 minutes at 300°F.
Remove the meatballs from the oven. Serve & enjoy!
