Preheat the oven to 400˚F. Line a muffin pan with paper liners.
In a medium bowl, beat together the egg, milk and butter.
In a separate bowl, mix together the flours, sugar and baking powder until fully combined.
Slowly add the dry ingredients to the wet ingredients, mixing until fully incorporated. Fold in the chocolate chips and oreos.
Scoop the batter into the prepared muffin pan and bake for 15-20 minutes, or until a toothpick inserted comes out clean.