Ready to dive into the heartwarming process of making this soup? Let’s get started:

1. Preheat your oven to 400°F (200°C).
2. Place the halved tomatoes, quartered onion, and garlic cloves on a baking sheet. Drizzle with olive oil, and season with salt, pepper, and optional red pepper flakes. Toss to coat evenly.
3. Roast in the oven for 30-35 minutes, until the tomatoes are caramelized and the onions are tender. The aroma will transport you to a cozy kitchen filled with love.
4. Transfer the roasted vegetables to a large pot. Add the vegetable broth and bring to a simmer over medium heat.
5. Remove from heat and stir in the fresh basil leaves.
6. Using an immersion blender, blend the soup until smooth. Alternatively, you can transfer the mixture to a blender in batches. Just be careful, as hot liquids can expand.
7. Adjust seasoning with additional salt and pepper, if needed. Simmer for another 10 minutes to let the flavors meld together.
8. Serve hot, garnished with a few extra basil leaves or a drizzle of olive oil if you’re feeling fancy.

Remember, this soup doesn’t demand perfection—just a bit of your time and a lot of love.