Cook rigatoni as per boxes directions and set aside.

In a large skillet, melt butter over a medium eat. Add shallots and garlic and stirring frequently allow to cook until the onions have softened and garlic is fragrant. About 4 or 5 minutes.

Add in the tomato paste and red pepper flake allowing to cook another 5 minutes stirring frequently. Add in the vodka and stir until everything is completely combined. Make sure to scrape any bits on the bottom of the pan.

Add in your Heavy cream and about 1/4 Cup of water stirring to combine. Add in half of your parmesan cheese and stir until melted. Turn off the heat and add your cooked pasta stirring so it is completely coated. Add remaining parmesan cheese and serve.