This is a different twist on my family's old favorite: Baked Penne. This recipe is also meatLESS, which I like, but I am sure you can improvise and add ground meat or sausage if you prefer. This is great for potlucks or parties because it can easily be made ahead of time. I saw a version of this made on 30 Minute Meals, but I prefer to make my own pesto sauce from scratch, because I am not too fond of the store bought. To save time, please feel free to use store bought pesto. I also chose to use whole wheat pasta in this as well. Because of the great flavors of pesto, cheese and tomatoes, I find that it is easy to sub whole wheat pasta, even for folks who might be skeptical.