Set a large pot of salted water to high heat

In a large skillet, sautee butter and onions on medium heat until see through

Add 1 cup of vodka and let the alcohol cook off a little bit before adding in the tomato puree. Stir to combine, taste for seasoning, add salt probably Cover and let simmer while the pasta cooks.

Cook rigatoni for 2 min less than the package’s description. When al dente, using a strainer transfer directly into vodka sauce to finish cooking.

Divide and serve! Perhaps put parmesan on top or some fresh basil. Voila