For this ultra decadent recipe, spread out your shortbread crust in a pie pan, and cook for 25 minutes in a preheated oven at 350 °F. Break 1 1/4 cups chocolate in a bowl, and add 1/4 cup hot milk with 1/2 cup heavy liquid cream. Add 2 beaten eggs and mix well to combine. Pour the preparation into the pre-baked pie tart, and bake for an additional 15 minutes at 350 °F. Garnish with cocoa powder to serve.