Whoopie pies
These soft cookies are sandwiched with peanutty icing for a sweet and salty combo that’s hard to resist
MAKES 10 PREP 20 MINS, PLUS COOLING COOK 15 MINS
● 100g unsalted butter, softened
● 175g light muscovado sugar
● 1 medium egg
● 35g cocoa powder
● 300g plain flour
● 1tsp baking powder
● 1tsp bicarbonate of soda
● 100ml milk
