Pumpkin Pasta

This pasta casserole is full of delicious fall flavors.  It has been part of my freezer repertoire for many years and led to my purchase of the titular very large bowl of this blog.  I was trying to make a large batch of this and while it all technically fit in my largest bowl at the time, the bowl was so full that I couldn't stir effectively.  It took forever to mix that batch and made a large mess. Afterwards I got online and purchased my 30 quart bowl that I use for my freezer cooking now.

Adapted from: Veganomicon
Difficulty: Moderate
Category: Heat and Eat
Recipe Column: AM