Creating Creamy Sausage Rigatoni is simple. Follow these steps for a delicious result:

1. Cook the Pasta: In a large pot, bring salted water to a boil. Add rigatoni and cook according to package instructions until al dente. Drain and set aside.
2. Brown the Sausage: In a large skillet, heat olive oil over medium heat. Add the sausage, breaking it apart with a spoon. Cook until browned, about 5-7 minutes.
3. Add Onion and Garlic: Add the diced onion to the skillet and cook until softened, around 3-4 minutes. Stir in the minced garlic and red pepper flakes, cooking for an additional 1-2 minutes until fragrant.
4. Create the Sauce: Pour in the heavy cream and chicken broth. Stir well to combine, bringing the mixture to a simmer.
5. Incorporate Cheese: Add the grated Parmesan cheese slowly, stirring continuously until the sauce thickens. Season with salt and pepper to taste.
6. Combine Pasta and Sauce: Add the drained rigatoni to the skillet, tossing it in the creamy sauce to ensure even coating.
7. Heat Through: Allow the mixture to heat for another 2-3 minutes, ensuring everything is well combined and warmed.
8. Garnish and Serve: Remove from heat, garnish with fresh basil if desired, and serve hot.

Following these steps will guide you to create this incredible dish with ease.