rigatoni recipe

#### Ingredients: - **1 pound rigatoni pasta** - **2 tablespoons olive oil** - **1 medium onion** (finely chopped) - **3 cloves garlic** (minced) - **1 can (28 oz) crushed tomatoes** - **1 can (14.5 oz) diced tomatoes** - **1 teaspoon dried oregano** - **1 teaspoon dried basil** - **1/2 teaspoon red pepper flakes** (optional) - **Salt and black pepper** (to taste) - **1/4 cup fresh basil leaves** (chopped) - **1/2 cup grated Parmesan cheese** (plus extra for serving) - **Fresh parsley** (chopped, for garnish)