1 tablespoon olive oil
1/2 tablespoon balsamic vinegar
2 tablespoons pesto
salt and pepper to taste
Preheat oven to 375F. Cut the tomatoes into quarters, removing the woody white roots of the stem. Toss to coat in olive oil and balsamic and sprinkle with salt and pepper.
Roast in the oven until the tomatoes start to break down and caramelize, about 30-40 minutes. Remove from oven, top with pesto and serve.