Add frozen meatballs directly to the crockpot
Pour pineapple chunks with juice over meatballs
Add bell peppers and diced onion
In a bowl, whisk ketchup, sweet chili sauce, soy sauce, and garlic
Pour sauce evenly over everything
Cover and cook on LOW 4–5 hours or HIGH 2–3 hours
Optional: Mix cornstarch with water and stir in last 30 minutes
Stir gently and serve warm
