1. 1. Cook rigatoni pasta according to package instructions. Drain and set aside.

2. 2. In a pan, cook chorizo until browned. Add white onion and roasted garlic, cook until fragrant.

3. 3. Add crushed tomatoes to the pan and simmer for 10 minutes.

4. 4. Stir in butter until melted.

5. 5. Toss the cooked rigatoni pasta in the sauce until well coated.

6. 6. Serve hot and enjoy!