Cheesy Taco Pasta

http://www.emilybites.com/2011/11/cheesy-taco-pasta.html

I tried this recipe tonight and it was awesome!!  I just went ahead and used a whole box of whole wheat pasta, there was about 4 oz. left in the box.  I used light sour cream instead of fat free because I like the consistency better, but you could also sub plain non fat greek yogurt.  I just used about 1 1/2 cups 2% shredded sharp cheddar cheese instead.  It was awesome!  It was kind of a cross between a chili mac, undone stuffed shells & tacos, yum!