Preheat the oven to 350 degrees F and prepare a greased large oven safe baking dish (13×9 or 11×7).
Bring a large pot of water to a boil. Boil the ziti until al dente. Cook for 3-4 minutes less than the time the package recommends. Remember, the pasta will continue to cook in the oven and soak up the sauce along the way!
While the pasta is cooking, heat the olive oil over medium heat in a sauté pan.
Sauté the onions and garlic for 3 minutes or until soft and translucent.
Add the red peppers, yellow squash and zucchini to the pan and cook for 3 minutes or until gently softened. Do not skip this step, it's important to gently cook the vegetables to release some liquid.
Drain the pasta in a colander and return to the pot it cooked in.
To the cooked pasta, add the sautéd vegetables, tomato sauce, 1 cup of mozzarella, ricotta, parmesan cheese, basil, black pepper, and salt. Stir together to combine.
Pour the pasta mixture into a large baking dish (13×9 or 11×7) Sprinkle the remaining cup of shredded mozzarella cheese on top.
Cover the dish and bake at 350 for 30 minutes.
With 3 minutes left, remove the lid and turn the oven on broil to achieve crispy, cheesy edges.
Notes
Remove the lid and turn your oven to broil the last few minutes to help build some delicious crispy edges.Add a pound of cooked ground beef, sausage, or turkey to make this a protein packed meal.Puree two cups of spinach with the tomato sauce to hide even more vegetables in this veggie filled baked ziti.