01 -
Heat olive oil in a large skillet over medium-high heat. Add diced carrots and onion; sauté for 3 to 4 minutes until slightly softened. Add minced garlic and cook for 1 minute, stirring frequently.
02 -
Transfer the sautéed vegetables to a 6 or 7 quart slow cooker. Add whole Roma tomatoes with juices, vegetable broth, chopped basil, bay leaves, and granulated sugar. Stir well and season with salt and freshly ground black pepper to taste.
03 -
Cover and cook on LOW for 6 to 7 hours or on HIGH for 3 to 3 1/2 hours until vegetables are tender and flavors are blended.
04 -
Discard bay leaves. Working in small batches, carefully purée the soup until smooth using a blender (filling only two-thirds full and venting) or use an immersion blender directly in the slow cooker for smoother texture.
05 -
Stir in the refrigerated three cheese tortellini. Cover and cook on HIGH for 15 to 20 minutes, or until tortellini is cooked through and tender.
06 -
Reduce heat to warm setting. Stir in heavy cream. Ladle soup into bowls, topping with shredded Parmesan and additional fresh basil as desired.