Spray the bottom of your slow cooker lightly with cooking spray. Add frozen meatballs to the bottom of pot. Pour pineapple and bbq sauce over meatballs.
Cook on LOW for 4-6 hours or HIGH for 2-3 hours. Serve warm garnished with chopped green onions, if desired.
Add meatballs, pineapple and bbq sauce to a large pot and stir to coat. Bring to a gentle boil, then reduce heat to low simmer.
Cover and cook for about 10 minutes for thawed meatballs, or 15+ minutes for frozen meatballs, or until warmed through.
