Preheat your oven to 400°F (200°C).

Place the cherry tomatoes and whole garlic cloves on a large, rimmed baking sheet. Drizzle with olive oil, then sprinkle with salt and pepper. Toss well to coat everything evenly.

Roast for 25-30 minutes, or until the tomatoes have burst and are beginning to caramelize.

Remove from the oven and let cool slightly. For a chunkier sauce, mash the tomatoes and garlic with a fork directly on the baking sheet. For a smoother sauce, transfer the contents of the pan to a blender and pulse to your desired consistency.

Stir in the fresh, chopped basil. Taste and adjust seasoning if necessary before serving.