This slow cooker vegetable tortellini soup is a comforting and flavorful dish that where simple soup vegetables like carrots, onion, and celery slow cook in a flavorful tomato broth. Add your favorite tortellini for a nourishing and satisfying soup! Whether you want a meatless meal or a hearty soup on a chilly day, this easy tortellini soup is the answer. Instructions to make this easy tortellini soup in the Instant Pot are also included.