Cut your pie dough into 8 pieces and gently push it into your non stick (or lightly oiled) pie shells until it's thoroughly covered. Make sure your crust is evenly spread.
In a glass bowl, combine heavy cream vanilla extract and melted butter. Add your cocoa powder and whisk until fully incorporated in the mixture. Add your egg and whisk again.
Pour your mixture onto your pie shells until 7/8 filled. Place on a baking sheet and bake for 20 minutes. Take out of the oven, let them cool down for 5 minutes before moving to refrigerator. Refrigerate for 1 hour before serving.
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