From http://www.seasonalfamily.com/2010/12/gluten-free-almond-flour-pie-crust.html.

2.5 cups almond flower

2 Tbsp sugar
1/2 tsp salt
6 Tbsp melted shortening
~ 2 Tbsp ice water to combine

Combine almond flour, sugar, and salt in a medium sized bowl.
Add in your melted shortening until well combined.
Slowly add in one teaspoon of ice water until a firm ball is formed.
Press dough into pie pan / cooking dish. Smooth out with bottom of a cup or measuring cup until flat like a pie crust.