Creating the Roast Cherry Tomato and Thyme Risotto with Basil Pesto is a rewarding experience. Follow these steps for a successful dish:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Roast the Tomatoes: Spread halved cherry tomatoes on a baking sheet, drizzle with olive oil, and sprinkle with salt and pepper. Roast in the oven for 20-25 minutes until they are soft and caramelized.
3. Prepare the Broth: In a saucepan, heat the vegetable broth over low heat. Keep it warm, as it will be needed for the risotto.
4. Sauté Aromatics: In a separate large pot, heat olive oil over medium heat. Add finely chopped onion and garlic, sautéing until they are translucent and fragrant.
5. Toast the Rice: Add arborio rice to the pot, stirring for 2-3 minutes until the rice is slightly translucent.
6. Deglaze with Wine: If using white wine, pour it in now and stir until mostly absorbed.
7. Add Broth Gradually: Begin adding warm vegetable broth, one ladle at a time, stirring constantly. Wait until the liquid is almost fully absorbed before adding the next ladle.
8. Incorporate Thyme: After about 15-20 minutes, when the rice is al dente and creamy, stir in the chopped thyme.
9. Finish With Parmesan: Remove the pot from heat and stir in grated Parmesan cheese. Adjust seasoning with salt and pepper to taste.
10. Add Roasted Tomatoes: Gently fold in the roasted cherry tomatoes, reserving a few for garnish.
11. Serve with Pesto: Spoon the risotto into bowls or onto plates. Drizzle with basil pesto and garnish with fresh basil leaves.

Now you are ready to enjoy an incredible serving of Roast Cherry Tomato and Thyme Risotto with Basil Pesto!