Set the oven rack to the middle of the oven. Preheat your oven to 325° F. Get your pie pan if you are using a pie crust you unroll fit it to the pie pan and crimp the edges. If using a store bought pie crust in a pan, set it out to fill.
1 pie crust
In a medium sized bowl, whisk the cocoa powder and flour together so the cocoa lumps break up. Add the sugar and the pinch of salt, whisk together to blend.
¼ cup Hershey Cocoa Powder, ¼ cup white granulated sugar, ¼ cup all purpose flour, pinch of salt
Break the three eggs into a small bowl, which lightly. Add the melted butter, evaporated milk, and vanilla and whisk to blend.
4 tablespoon butter, 1 teaspoon vanilla extract, 3 large eggs, 5 oz evaporated
Pour the liquid ingredients into the bowl of dry ingredients and whisk together to blend.
Pour the chocolate mixture into the prepared pie crust. Only fill ⅔ full if using a shallow pie shell, pour all of it if using a deep crust pie shell. Bake in the middle of the oven for 55 minutes.
Using a tooth pick, check to see if the pie is set in the middle. The tooth pick should come out clean. If there is pie filling on the tooth pick bake in 5 minute increments until it is done.
When the pie is done, turn off the oven and let the pie remain inside to cool down. This will let the pie cool down at the rate the oven cools and prevent the top of the pie from cracking. I crack the oven open so both the pie and the oven cool down at the same time, just faster.
Once cooled, slice and plate. Serve with whipped cream and shaved chocolate.