Preheat your oven to 375°F (190°C). Grease a 9x13 inch baking dish.
Cook pasta according to package directions until al dente. Drain and set aside.
While pasta is cooking, heat olive oil in a large skillet or pot over medium heat. Add chopped onion and cook until softened, about 5 minutes. Add minced garlic and cook for 1 minute more until fragrant.
Add the chopped bell pepper, zucchini, and broccoli florets to the skillet. Cook for about 5-7 minutes, until vegetables are tender-crisp.
Stir in the crushed tomatoes, vegetable broth, dried oregano, dried basil, salt, and black pepper. Bring the mixture to a simmer and cook for 5 minutes, allowing the flavors to meld.
Add the cooked pasta to the skillet with the sauce and vegetables. Stir to combine.
Pour the pasta and vegetable mixture into the prepared baking dish.
Sprinkle the shredded mozzarella cheese evenly over the top.
Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly and the edges are golden brown.
Let the pasta bake cool for a few minutes before serving.
Notes
This recipe can be customized with your favorite vegetables. Consider adding mushrooms, spinach, or peas.