Grease a 9-inch pie pan with butter and set aside.
Combine the dry ingredients (flours, sea salt and sweetener).
Stir in melted butter and vanilla.
Fold gently with spatula then knead with hands to form the pie dough.
Place ball of dough on a chopping board or cookie sheet. Roll it adding flour to the rolling pin to prevent sticking as needed. Try to roll dough into a circle.
Lay the circle of dough into your pie pan and press it into the sides with your hands. Cut off any extra. Use a fork or your fingers to design the edges if desired.
Place the uncooked crust in the fridge or on the counter while you prepare the pecan pie filling.