Add the tomatoes, red pepper, zucchini, and onion to a large baking dish.
250 grams (2 cups) cherry tomatoes, 1 sweet red pepper*, 1 small zucchini, ½ small red onion
Add the oil, vinegar, salt, pepper, and pepper flakes to the vegetables. Stir until well combined and the vegetables are coated.
2 tablespoons olive oil, 2 tablespoons balsamic vinegar, ½ teaspoon sea salt, ½ teaspoon black pepper, ¼ teaspoon hot pepper flakes
Place the vegetables into the oven and roast for 20-25 minutes, or until the tomatoes are bursting and the vegetables are starting to colour.
While the vegetables are roasting, cook the pasta in well salted water according to package instructions. To serve, top the pasta with the roasted vegetables and some pesto if desired. Serve hot.