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Total Time
1 Hour
Yield
Makes about 25
Photo: Iain Bagwell; Styling: Emma Star Jensen

How to Make It

Step 1

Preheat oven to 350°. Sift flour, cocoa, baking soda, and salt into a medium bowl.

Step 2

Beat butter and brown sugar in a large bowl with a mixer on medium speed until very fluffy, 3 to 4 minutes.

Step 3

Beat in egg, vanilla extract, and vanilla seeds. Reduce speed to low and gradually add flour mixture; then gradually beat in buttermilk until smooth, scraping down inside of bowl as needed.

Step 4

Line 2 large baking sheets with parch­ment paper or Silpat mats*. Put batter in a piping bag with a large tip (or cut a 1/2-in. corner off a resealable plastic bag and spoon in batter). Form 1-tbsp. mounds of batter 2 in. apart on sheets. Bake about 12 minutes or until cakes spring back when poked. Transfer to rack to cool.

Step 5

Meanwhile, make filling: Sift powdered sugar and matcha together into a medium-large bowl. Add cream cheese, butter, and mascarpone and beat with a mixer on low speed at first, then on medium until very smooth and creamy, about 2 to 3 minutes.

Step 6

Using an offset spatula or a butter knife, generously spread some filling on the flat side of a cake and top with another cake. Repeat for rest of cakes.

Step 7

*Chill matcha after opening to slow oxidation. Silpats (silicone baking mats) prevent sticking.

Chef's Notes

Make ahead: Cakes, up to 3 days, stored airtight at room temperature between sheets of parchment; filling, up to 2 days, chilled (bring to room temperature before spreading).

Nutritional analysis is per whoopie pie

The Breakaway Cook

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