Don’t worry over graham cracker crumbs if you have graham crackers on hand, just put some in a plastic bag and crush them yourself and they’ll be fine. Likewise with the pecans, which the original recipe called for. Goodness, have you looked at the price of pecans lately? I have a tendency to leave nuts out of anything I can but during the holidays I try to splurge and buy them. Still, walnuts are half the price of pecans and so that’s what I’ve been baking with. Since this recipe is pretty sacred to my mom. I to ask how she would feel about eating it with walnuts versus pecans and she was pretty dern happy.