Step 1

Prepare a frozen or refrigerated pie crust according to package directions

Step 2

In a medium bowl sift together flour, cocoa powder, and sugar

Step 3

Mix egg yolks into dry ingredients

Step 4

Next, slowly stir in milk pouring it in a little at a time

Step 5

Transfer into a medium sauce pan and cook over medium heat until mixture becomes thick

Step 6

Remove from heat add vanilla extract, stir to combine

Step 7

Transfer to baked pie crust and chill in the refrigerator for an hour to 24 hours

Step 8

Store leftover pie in the fridge for up to three days