1. Preheat oven to 400°F (200°C).
2. In a 9x13 baking dish, add onion, carrots, bell pepper, zucchini, and garlic.
3. Pour tomato sauce over the veggies to coat.
4. Roast uncovered for 40 minutes, or until vegetables are soft and tender.
5. Remove from oven and carefully transfer everything to a blender. Blend until smooth and creamy. (Add a splash of water if you’d like a thinner sauce.)
6. While veggies are roasting, cook pasta according to package directions. Drain and set aside.
7. Combine pasta with the blended veggie sauce and mix until well coated.
8. Serve warm.
