Um, kind of genius... "Mix up each batch and place each pie filling in it's own freezer bag. I then place the freezer bag in a pie pan and place it in the freezer to freeze in that shape. Once the filling is frozen, I take it out of the pan and store the fillings in stacks in the freezer. When I want to make a pie, all I have to do is unwrap a filling, plunk it into the crust, and bake."
