1. In a large pot, heat olive oil over medium heat.
2. Add chopped onions and sauté until they become translucent.
3. Stir in minced garlic and cook for an additional 1-2 minutes.
4. Pour in the canned tomatoes with their juice, breaking them apart with a spoon.
5. Add vegetable or chicken broth, dried basil, dried oregano, salt, and pepper.
6. Bring the mixture to a simmer and let it cook for 15-20 minutes.
7. Use an immersion blender to puree the soup until smooth. Alternatively, transfer the soup to a blender and blend in batches, then return to the pot.
8. If desired, stir in heavy cream for a creamier consistency.

Serving:

Serve the hot grilled cheese sandwiches alongside a bowl of tomato soup. Dip the sandwiches into the soup and enjoy the comforting harmony of flavors. This classic combo is perfect for a cozy night in or a nostalgic lunch that never goes out of style.