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Whoopie Pie Cake

The Whoopie Pie was invented in Maine back in the 1920s: Like a giant, squishy Oreo cookie, it is two discs of chocolate cake sandwiching a creamy-sweet filling. One of the most popular desserts at Becky's Diner in Portland, Maine, is a cake she makes inspired by the Whoopie pie, frosted with a low-cost icing she found while browsing through a World War II era cookbook. The marshmallow-soft icing gives this cake an evocative old-fashioned character, totally unlike a modern "sinful" boutique gateau.

Recipe Source: Becky's Diner

Preparation Time: 20 minutes
Cook Time: 50 minutes
Servings: 8


1 cup margarine
2 cups sugar
2-1/4 cups flour
1 teaspoon baking soda
1 teaspoon salt
1-1/4 cups buttermilk
3 eggs
9 tablespoons cocoa powder

2 cups whole milk
3/4 cup white flour
2 cups granulated sugar
8 tablespoons butter
1 tablespoon vanilla
1 cup solid vegetable shortening


  1. Preheat oven to 350 degrees.
  2. Grease 2 9" round cake pans.
  3. Beat together the margarine and sugar. Add flour, baking soda, and salt. Mix slowly, gradually adding buttermilk. Beat 2 full minutes.
  4. Add eggs, then gradually add cocoa, beating another 2 minutes, stopping occasionally to scrape the sides of the bowl.
  5. Pour batter into prepared pans and bake about 40 minutes, until center springs back when gently pushed.
  6. Cool the cake layers 5 minutes, then remove them from pans and cool them completely on a wire rack.
  7. To make the icing, pour the milk into a stainless steel saucepan over medium heat. Gradually whisk in flour until a thick paste forms. Do not scorch! Remove from stove and cool this mixture in the refrigerator.
  8. In a separate bowl, mix the sugar, butter, vanilla, and shortening. Add the cooled paste. Whip for at least 3 minutes until creamy. This makes enough icing to generously frost a 2-layer cake.
Recipe photo of Whoopie Pie Cake

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