Whoopie Pies with Marshmallow Filling - Classic Chocolate

By MJH

Ingredients

• For the Whoopie Pies:
• 1 3/4 cups all-purpose flour
• 3/4 cup cocoa powder
• 1/2 teaspoon salt
• 1/4 tablespoon baking soda
• 1/4 teaspoon baking powder
• 1 stick (1/2 cup) unsalted butter, softened
• Scant 1 cup sugar
• 1 egg
• 1 teaspoon vanilla
• 1 cup buttermilk
• For the Marshmallow Filling:
• 2 egg whites
• 1 1/2 cups sugar
• 1/3 cup cold water
• 1/4 teaspoon cream of tartar
• 1/2 cup mini marshmallows
• 1 teaspoon vanilla

Details

Adapted from highaltitudebakes.com

Preparation

Step 1

To make the Whoopie Pies:
Begin by preheating your oven to 365 F.

Combine the flour, cocoa powder, salt, baking soda, and baking powder in a bowl and set aside.

Cream the butter and sugar together until light and fluffy, 3-4 minutes.

Beat in the egg until smooth.

Add the buttermilk and vanilla and stir until combined.

Gradually beat in the flour mixture until just incorporated.

It should be thick and tacky.

Scoop out the batter using 1-2 tablespoon measures (depending on how large you want your whoopie pies) and place three inches apart on parchment-lined baking sheets.

Bake for 10-15 minutes, until the cakes are puffed and no longer look wet in the center.

Let cool completely.

Pipe or spoon the marshmallow filling onto the underside of one cake, and sandwich with another.


To make the Marshmallow Filling:
Begin by bringing a pot of water to a simmer over medium heat.

Combine the egg whites, sugar, water, and cream of tartar in a bowl that fits over the pot of simmer water.

Whisk the egg white mixture constantly, turning the heat to low if necessary, until the sugar has dissolved completely.

Carefully pinching a drop of the mixture between your fingertips is a good test to ensure you feel no granules of sugar.

Carefully remove the bowl from the pot of simmering water and transfer the egg white mixture into the bowl of an electric mixer.

Beat the egg white mixture with a whisk attachment on high speed until light and fluffy, 2-3 minutes.

Meanwhile, microwave the marshmallows until they begin to puff, and add them to the egg white mixture as its whipping.

When the marshmallow filling is thick enough to pipe, stir in the vanilla and fill the whoopie pies.

The longer it sits the more it will firm up.