Ground the Grape Nuts in a food processor. You can use half of the recipe if you don't need the crust to go too far up the side of the pan. Mix the Grape Nuts and apple juice together and press into the pie pan. Preheat oven to 350 degrees F.

Bake crust for 10 minutes, then let cool if you you are using a cool filling.

For a pumpkin pie, just add the filling and bake it all at once.