In a medium bowl or the base of a slow cooker, combine the ketchup, honey, brown sugar, soy sauce and garlic. Add meatballs and stir until coated in sauce. Add a pinch of garlic salt and pepper on top if desired.
Cook on high 2 to 3 hours or low 3 to 4 hours. Turn the slow cooker to warm until ready to serve. Season to taste.
Enjoy as an appetizer or serve over rice and top with green onions for a main dish.
