Whoopie Pies may not have taken off here in the UK but Kookybakes (seen here at Kings Cross' Kerb street food pitch) has some great products - Malteser and Salted Caramel Whoopie Pies
Red Velvet Whoopie Pie
Strawberry Cheesecake and Carrot Cake Whoopie Pies
Peanut Butter Cup Whoopie Pie plus their Signature Slice
