Add the butter and oil to a pan and turn the heat to medium high. When the butter is melted, add the garlic, parsley and lemon zest, and saute until the garlic starts to turn translucent.
Add the cooked pasta to the pan along with the creme fraiche (or sour cream) and 3 Tablespoons of Parmesan and gently toss to thoroughly and evenly coat the pasta with the sauce.
Adjust seasoning as needed with salt and pepper.
Transfer the pasta to a plate (or don't), sprinkle the last Tablespoon of Parm on top, and enjoy. :) On the day I took this pic, I made a quick side of lemon garlic sauteed spinach to go with.
