I use this recipe, it's a hit every time

1/4 cup extra virgin olive oil
4 cloves minced garlic
1/2 tsp. crushed red-
pepper flakes
1 28-oz. can crushed
tomatoes
3/4 tsp. fine sea salt
1 lb. penne
2 tbsp. vodka
1/2 cup heavy cream
1/4 cup chopped fresh flat-
leaf parsley
2 Italian sausages (optional)

In a large skillet, heat oil over moderate heat. If using sausage, remove casing and add meat to pan. Cook, breaking up the meat, until brown. Add garlic and red-pepper flakes and cook, stirring until garlic is golden. Add tomatoes and salt and bring to a boil. Reduce heat and simmer 15 minutes.

Meanwhile, in a large pot of boiling salted water, cook penne until just done. Drain. Return pasta to the hot pot.

Add vodka and cream to sauce and bring to a boil. Stir sauce into pasta and cook over low heat for 1 minute. Stir in parsley and serve.