Whoopie pies are a wholly American invention and they are not such a phenomenon in New Zealand, hence I have never made them before until now. It combines features of a cookie, cake, pie and sandwich and the result is rather delicious. I cut back on the sugar and used sugar-free marshmallows too.

Makes 24-30 sandwiched pies

1 1/2 c flour

1/2 c cocoa

1 tsp baking soda

1/2 tsp baking powder

1/2 tsp salt

150g softened butter

3/4 c brown sugar ( I used a mix of brown sugar and stevia)

2 tsp vanilla extract

2 eggs

3/4 c buttermilk/yoghurt

15 marshmallows (I used sugar free)

Preheat oven to 170C. Line 2 baking trays with baking paper.

Sift flour, cocoa, baking soda, baking powder and salt into a medium bowl.

In a large bowl cream the butter and sugar by hand or with an electric beater until light and fluffy, Beat in vanilla and eggs, one at a time.

Fold in half the dry ingredients, then add buttermilk (or a mix of yoghurt and milk). Fold in remaining flour mixture.

Scoop the batter into a piping bag with a wide nozzle. Pipe small 5cm rounds onto the trays a few cm apart to allow for spreading. Bake for 8 min, leave on the tray to cool for a couple of minutes then transfer to a wire rack to cool completely.

Preheat oven grill to its highest temperature. Put half of the whoopie pies flat side up on a tray with a marshmallow on top of each one. Place under the grill until marshmallows melt. It can take 2-3 minutes, watch carefully.

Remove from the grill and immediately place another whoopie pie on top. Place on a wire rack to cool and store in an airtight container for up to 3 days.