Tomato Soup with Grilled Cheese Croutons

Name: Tomato Soup with Grilled Cheese Croutons
Ingredients: 2 tablespoons butter, divided; 1 small onion, chopped; 1 stalk celery, chopped; 3 cloves garlic, chopped; 1 (28 ounce) can whole peeled tomatoes, preferably San Marzano; 3 cups reduced-sodium chicken broth, no-chicken broth or vegetable broth; ¼ cup heavy cream (Optional); ¼ teaspoon salt; ¼ teaspoon ground pepper; 2 large slices whole-wheat country bread; 2 ounces sliced sharp Cheddar cheese (3 slices); ¼ cup chopped fresh basil