In a medium sized bowl cut the butter and coconut oil into the coconut flour until mixture resembles irregular pea sized clumps. Add remaining ingredients except egg white. Mix together with your hands until a soft dough has formed. Pat dough into a 9 inch pie pan. When you are done forming the crust, take the egg white and beat it with a fork until frothy. With a pastry brush, brush the crust with the egg white just before filling.