
Whoopie pies, from what I can tell, are an east coast thing. While I have seen them here in San Francisco, when I bring them up with folks, they usually have no idea what I am talking about. I made these for a visiting cousin who is living in Maine. Maine, according to my cousin, is very fond of whoopie pies. In fact, she served them at her wedding.
The whoopie pie originated with the Amish in Pennsylvania and, according to its history, was made popular by a cookbook put out by a manufacturer of marshmallow fluff.
I loved them as a kid. I tried making whoopie pies a long time ago and recalled using a traditional recipe that uses shortening instead of butter. I disliked the end result very much. I just can't stand the filmy feeling that shortening gives a baked good.
This time around I was determined to stick with butter. I used a recipe from epicurious.com as a jumping off point. What I love about epicurious is its active community. I read through some of the 98 reviews and found a filling alternative much lauded by reviewers. That filling is featured here (although altered) and with matcha powder added. My only issue with the recipe is that the filling had a slightly odd look to it, but otherwise the whoopie pies tasted fantastic and were way better than the ones made with shortening. All 30 of them went quick!
Mini Matcha Whoopie Pies
makes ~32 moon pies / 350 degree oven
2 cups all-purpose flour
1/2 cup cocoa powder
1 1/4 teaspoons baking soda
1 teaspoon salt
1 tablespoon white vinegar
1 cup whole milk
1 teaspoon vanilla
1 stick (1/2 cup) unsalted butter, room temperature
1 cup packed brown sugar
1 large egg
- Whisk together flour, cocoa, baking soda, and salt in a bowl until combined.
- Stir together buttermilk and vanilla in a small bowl.
- In the bowl of an electric mixer at medium-high speed, beat together butter and brown sugar until fluffy, about 3 minutes.
- Add the egg and beat until combined.
- Add the flour mixture and buttermilk in batches, beginning and ending with flour, scraping down side of bowl occasionally, and mixing until smooth.
- Using a large pastry bag fitted with a large, circular tip, pipe 1-1/2 inch circles about 1 inch apart onto two parchment covered baking sheets.
- Dip your thumb in water and press down the point of each piped circle.
- Bake in upper and lower thirds of oven, switching position of sheets halfway through baking, until tops are puffed and cakes spring back when touched, approximately 8 to 10 minutes.
- Transfer with a metal spatula to a rack to cool completely.

Filling
1/2 cup whole milk
2 tablespoons flour
1 stick (1/2 cup) unsalted butter, room temperature
pinch salt
2 cups powdered sugar
1 tablespoon matcha powder
1 teaspoon vanilla
- Heat milk in a small saucepan.
- Sift in the flour.
- Cook over medium heat until thick, approximately 3 minutes. Set aside to cool.
- Beat butter with a paddle attachment at medium-high speed until creamy.
- Sift in the salt, powdered sugar, and matcha powder and beat until incorporated. Add the vanilla and beat to combine.
- With mixer on slow speed, add the cooled flour mixture one tablespoon at a time.
- Beat on medium high for 3 - 4 minutes or until mixture has a fluffy texture.
Assemble
- Lay out cooled cookies in like-sized pairs flat side up.
- Spoon or pipe a half teaspoon of filling onto one of each pair.
- Top the filling with the other of the pair.




