I made a delicious pumpkin pie for Thanksgiving using Trader Joe's triple-ginger gingersnaps. The ginger flavor really complements the pumpkin. Following a basic recipe, I added a fair amount of butter to the ground gingersnaps. Although it was delicious, I'd like to find a way to do this without it being so rich and calorie-laden. So my question is:
Does anyone have experience making a gingersnap pie crust using something other than butter or other fat to bind the crumbs, given that there is already fat in the gingersnaps -- perhaps egg? egg white? water? (Perhaps similar experience with a graham cracker crust could apply.)