Carrot and Walnut Whoopie Pies
For the frosting:
Cream butter and sugars until light and fluffy.
Add eggs and whites one at a time, mixing in between. Add vanilla and mix well.
Combine flour, baking powder, spice and fold in the dry ingredients alternatively with the buttermilk. Stir in the carrot and nuts.
Use a tablespoon to drop small amounts of batter onto a lined baking tin and bake for 10 minutes at 180C or until springy to the touch.
For the frosting, whisk all the ingredients until light and fluffy.
Once cooled, sandwich the whoopie pies together with the frosting.