Bring A Large Pot Of Lightly Salted Water To A Boil. Add Pasta And Cook For 8 To 10 Minutes Or Until Al Dente; Drain. In A Skillet Heat Oil And Saute Garlic Over Medium Heat. Brown Sausage In Skillet. Once Brown Add Frozen Peas And Simmer For 5 Minutes. Slowly Add Heavy Cream And Butter To Skillet; Bring To A Slight Boil. Add More Cream If Necessary. Cook For 5 Minutes. Toss With Cooked Pasta And Top With Parmesan Cheese.