Pasta penne with bacon and pesto

This is what I call a functional tea, when nothing has been planned and you want something easy and non challenging.  A jar of pesto is an essential  store ingredient, mixed with pasta and a grating of fresh Parmesan, it's a meal in itself. Tonight I had some half fat creme fraiche to use up, a pack of bacon and some green beans in the freezer. It's a good sign when James is pinching good from my  plate, so this meal is definitely a winner. 

While the pasta is cooking, chop the pack of bacon into bits and fry until crispy. Add the green beans to cook with the pasta for the final few minutes. Mix the pasta and beans with creme fraiche and pesto, then add the crispy bacon. Serve in warm serving plates and sprinkle with parmesan.