- Preheat the oven to 350F and position the rack on the bottom. Spray a glass pie dish with cooking spray.
- Measure all of the dry ingredients into a medium bowl and mix thoroughly with a whisk. Add the butter and mix with a spatula until the butter is distributed and the mixture resembles moist crumbs with larger clumps throughout. It should be moist but not wet and sticky.
- Dump the peanut flour crust mixture into the pie plate. With your fingers, distribute the crumbs around the pie plate and up the sides. Place a piece of waxed paper over the crust and with a flat-bottomed glass, press the crust into the plate. Take your time, crumb crusts are a bit temperamental.
- Bake on the bottom rack for 10 - 15 minutes or until it just begins to brown. Remove and let cool completely before filling. I suggest to let the filling sit overnight before cutting and serving.