2 tablespoons Italian parsley, coarsely chopped; for garnish
Cook penne pasta according to directions and drain.
Meanwhile in a large skillet, melt butter over medium-low heat. Add pancetta and garlic; brown lightly. Do not burn. Add pepper flakes and vodka; simmer for 2 minutes. Stir in tomato puree, cream, and basil; simmer gently for 2 to 5 minutes more. Season with salt. Add cooked pasta and cheeses; toss gently. Garnish with chopped parsley. Serve immediately.