01 - Bring a large pot of salted water to a boil. Add pasta and cook until al dente according to package directions. Reserve 1/2 cup of the pasta cooking water, then drain.
02 - Heat olive oil in a large skillet over medium heat. Add onion and sauté for 2 to 3 minutes until tender. Incorporate garlic and red pepper flakes, cooking for 1 minute until fragrant.
03 - Pour in canned crushed tomatoes. Season generously with salt and pepper. Simmer the mixture uncovered for 5 minutes, stirring occasionally.
04 - Pour in vodka and cook for 2 to 3 minutes, allowing alcohol to evaporate.
05 - Reduce heat to low. Add heavy cream and simmer for 2 minutes. Stir in Parmesan cheese until fully melted and the sauce becomes creamy.
06 - Add the cooked pasta to the sauce, tossing thoroughly to coat. Use reserved cooking water in small amounts as needed for desired consistency.
07 - Serve immediately, garnished with torn fresh basil and extra Parmesan cheese.