Penne in Vodka Sauce

I have never had it so the last few nights I have been practicing.  The first time I made it, it was just awful I have to admit.  So I did more research and tweaked it a little and tonight's came out AMAZING.

1 pd penne

1 pd pancetta cut in small cubes

1 onion chopped

2 tbsp of olive oil

sprig of fresh rosemary

1/2 C heavy cream

quart of prepared tomato sauce

1/2 C grated parmesan cheese

dash of pepper

In a skillet heat the olive oil and onion and pancetta.  Make penne according to directions.  Cook until pancetta is crisp and the onion is translucent about 4 minutes. Add the vodka and let cook on medium heat until reduced by half.  Stir to scrap up the crisp onions and pancetta stuck to the bottom of the pan.  Add the heavy cream and rosemary and pepper, heat until cream thickens and is bubbly.  Add the tomato sauce heat through, then add cheese till melted.Garnish with parsley or basil and parmesan cheese.