Cooling/Resting Time: None
Add frozen meatballs to a 4-6 quart slow cooker.
Whisk together cranberry sauce, chili sauce, brown sugar, and orange juice until smooth.
Pour sauce over meatballs and stir to coat.
Cook on low for 4 hours, stirring once or twice during cooking.
Serve with toothpicks as appetizer or over rice for a main dish.