Combine Ingredients:

Using a fork or pastry blender, mix the frozen butter, flour, and salt together. Alternatively, you can use a KitchenAid mixer for convenience.
Be careful not to over-mix. Stir until just combined.

Chill the Dough:

Shape the dough into a ball and refrigerate for 4 hours.

Roll and Cut:

Roll the dough gently onto a floured surface.
Using a 6" plate as a guide, cut out circles for the hand pies. This recipe should yield 6 circles.

Fill and Seal:

Add your desired filling to each circle.
Seal the edges with a floured fork.

Bake:

Brush the tops with egg white and add crumble topping.
Bake at 350°F for 35-40 minutes, or until golden brown.