The oreo whoopie pie

Method

• step 1

  Whoopie pie sponge

• step 2

  Line 2 baking trays or silcone mats together.

• step 3

  Whisk butter and sugar together.

• step 4

  In a separate bowl, mix flour, cocoa powder and baking powder.Whisk in the egg, beat well.Fill a piping bag with the mixture and pipe 5cm round cakes onto the lined baking trays.

• step 5

  Bake for 10-15 mins or until the cakes spring back when touched.

• step 6

  Whoopie pie marshmallow filling.Add the water to a metal bowl over a bain-marie on a low heat. Break the marshmallows in half and add to the water.

• step 7

  Stir for a few minutes and then add in the white chocolate buttons. Stir the mixture until the chocolate and marshmallows have dissolved. Let the mixture cool for 15 minutes.

• step 8

  Spoon the mixture on to one half the whoopie pie and sandwich the other half on top.