Loaded Veggie Baked Ziti

Ingredients

• 1 pound ziti pasta
• 2 tablespoons olive oil
• 1 medium onion, diced
• 3 cloves garlic, minced
• 1 red bell pepper, diced
• 1 yellow bell pepper, diced
• 1 zucchini, sliced
• 1 cup mushrooms, sliced
• 1 cup broccoli florets
• 1 jar (24 ounces) marinara sauce
• 1 can (14 ounces) diced tomatoes, drained
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon red pepper flakes (optional)
• Salt
• pepper
• 1 cup ricotta cheese
• 2 cups shredded mozzarella cheese
• 1/2 cup grated Parmesan cheese
• Fresh basil leaves, for garnish