Ingreadient

• 1 (16 ounce) package rigatoni pasta
• 1 tablespoon vegetable oil
• 1 onion, sliced
• 3 cloves garlic, crushed
• 1 small zucchini, sliced
• 1 small yellow squash, sliced
• 1 green bell pepper, sliced
• 1 (8 ounce) package sliced fresh mushrooms
• 1 (28 ounce) can crushed tomatoes
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• ½ teaspoon red pepper flakes
• ¼ teaspoon salt
• ¼ teaspoon ground black pepper
• 2 pounds shrimp, peeled and deveined