Sleeper's made from scratch small batch Maine whoopie pies. Our bakers create each large whoopie pie with care from family recipes passed down for generations. Maine whoopie pies are known throughout the country. A Whoopie Pie is actually a two "hamburger roll" size cakes, filled with a lfluffy white filing. Sleeper's Maine Whoopie Pies are perfect size for sharing. Discover Maine whoopie pies for yourself. Baked fresh and shipped via priority mail the same day!