Prep ingredients, dice onion and mince garlic.
Boil water and heavily salt. Cook noodles until al a dente. You will need to save 1- 1 1/2 cups of water for your pasta sauce. I recommend using bronze drawn noodles.
Heat 2 tablespoons Extra Virgin Olive Oil on medium heat in dutch oven or large saucepan. Add onion and cook until translucent Add minced garlic, 2 tablespoons of Calabrian chili peppers, 1 teaspoon sugar and salt to taste. Stir for 2-3 minutes cooking on medium heat. Add 12 ounces of tomato paste and cook for 4-5 minutes, until turns a deep red color.
Add 1/2 cup of pasta water and stir well.
Reduce heat to low-medium. Add 1 cup heavy whipping cream and stir well.
Add 4 tablespoons of butter, parmesan and additional pasta water needed to make creamy consistency. The longer it sits on the stove, the more water you'll need to add.
Add the rigatoni pasta to the sauce pan. Toss to combine. If needed add additional pasta water.
Top will fresh parmigiano reggiano and serve immediately.