A classic lunch when served with a Grilled Cheese Sandwich for dunking. Fresh tomatoes may first be grilled for a smoky flavor, or roasted to caramelize their sugars.
Heat in a soup pot over medium-low heat:
Add and cook, stirring, until tender but not browned, about 10 minutes:
Stir in:
Simmer until the tomatoes are covered in their own liquid, about 25 minutes. Puree the soup with an immersion blender (or in batches in a food processor or regular blender) until smooth. Return to the pot and stir in:
Heat through.