Step 1: In a large mixing bowl, whisk together the brown sugar, prepared mustard, garlic salt, salt, black pepper, tomato sauce, lemon juice (or vinegar), and Worcestershire sauce until fully combined.

Step 2: Add the Italian meatballs and gently stir until each meatball is evenly coated in the sweet and spicy sauce.

Step 3: Transfer the mixture to a slow cooker and cook on LOW for 3 hours, stirring occasionally if possible.

Serving Tip: Keep the crockpot on the “warm” setting during your party for easy self-serve access.