01 -
Mince garlic cloves, grate Parmesan, and remove casings from chorizo before chopping.
02 -
Boil rigatoni in generously salted water until al dente. Drain, reserving one cup of the cooking water.
03 -
Heat butter over medium in a large skillet. Add chorizo and cook for 5 minutes. Stir in garlic and cook until fragrant.
04 -
Add tomato paste and cook for 3 minutes. Stir in oregano, salt, and black pepper. Pour in heavy cream and bring to a boil, then reduce heat to low.
05 -
Stir in Parmesan cheese until melted. Add rigatoni and half a cup of reserved pasta water, tossing to combine. Adjust seasoning to taste and finish with parsley.