Soften butter & cream cheese by allowing to come temp prior to starting
In a large bowl whisk together flours, sugar, cocoa, baking soda, and pinch of salt
Fold in butter and egg with a rubber spatula, kneading to combine into dough, then set in the fridge
Use an electric mixer to beat filling ingredients together until smooth
Line a baking sheet with parchment paper and preheat oven to 350
Divide dough into 18 small balls and flatten
Place 9 flattened cookies on baking sheet, place about ~1 tbsp filling in the center, then place another flattened piece of dough on top and use your fingers to press around the edges
Bake for 9-11 minutes
Allow to sit on baking sheet for 5 min then carefully transfer to wire cooling rack where they'll firm up a bit
Use more filling or organic vanilla icing (I used miss jones organic vanilla icing)
Enjoy!