Slow cooker meatball tortellini soup is a comforting soup that’s perfect for busy weeknights or chilly days when you crave a hearty meal. This easy soup combines frozen meatballs, tortellini, and basic soup vegetables in tomato-based broth. Toss the ingredients into the crockpot and let the slow cooker work its magic! This flavorful meatball soup is a crowd-pleasing soup that’s sure to become an instant favorite. Instructions to make this meatball tortellini soup in the Instant Pot are also included.