I found the corn powder at Target: Simply Balanced Sweet Corn Freeze Dried Vegetables (2.5 oz. bag) - used half cup and ground to fine powder in food processor.
You will use 9 egg yolks in this recipe. Save the egg whites for omelettes.
Inspired by: http://www.shopmilkbar.com/shipping/shop/crack-pie/
Adapted from: http://www.averiecooks.com/2012/04/milk-bar-mondays-crack-pie.html
Recipe Notes and Items I Would or Did Change:
I would halve the entire recipe, not just the filling portion, right off the bat (no one needs two of these laying around, nor do you “need” the extra cookie portion; unless you have the freezer space for it or company or are training for a triathlon, halving is my recommendation)
I would use a 9-inch, not 10-inch, pie plate as she recommends. I felt it was just “barely” enough filling and don’t attribute it to halving the recipe. I also used more than half the cookie for the crust and feel a 9-inch would be better.
I would underbake the cookie crust by about 25-30% of what she recommends (take it from 15 minutes to about 10 minutes) so that it crumbles easier and packs into the pie plate easier; plus it gets baked a second time anyway as part of the pie.
I would consider buying a store-bought graham cracker pie crust and just making Christina’s filling if I wanted to take this recipe from 2 hours of standing on my feet to 15 minutes by just making the filling.
I didn’t miss the corn powder and would continue to use my 1 1/2 tablespoons of all-purpose flour because I am frugal, didn’t want to source it, and don’t want to store a bag of corn powder in my already maxed out cupboard space for the occasional one tablespoon use of it.
Tosi recommends baking the entire pie, crust and filling together, for 15 minutes at 350F, opening the oven door and allowing the oven to cool to 325F, and then baking for about 5 more minutes after the oven temperature has reached 325F (about 20-25 minutes of total baking time). I needed to bake mine for about 31-34 minutes of total baking time in order for the center to set (at least one-third longer than she called for which is highly significant and to be noted). Also I was only baking one pie; if I had two in the oven, it would have taken even longer.