Made on 03/11/12.
Variations: I used sour cream instead of Greek yogurt, and my three cheeses were Pecorino Romano, Parmesan, and Cheddar. I used whole wheat rotini for the pasta, and Italian breadcrumbs instead of Panko. Delish!
The squash is great - not only is it a healthy addition to the mac & cheese, but it provides a wonderful creamy texture and gorgeous color! I was apprehensive about this flavor combination, but everything melts together very well :)