- Cook penne pasta in salted boiling water until al dente.
- In a separate pan, sauté minced garlic and diced onions in olive oil until soft.
- Add tomato sauce and vodka, and let simmer until the alcohol cooks off.
- Add heavy cream and grated parmesan cheese, and stir until everything is combined and creamy.
- Toss cooked penne pasta with the sauce, and serve hot with a sprinkle of fresh parsley.