Chocolate Marshmallow Whoopie Pies (Printable View)

Soft chocolate cookies with fluffy marshmallow cream filling—a beloved American dessert classic.

# What You Need:

→ Chocolate Cookies

01 - 2 cups all-purpose flour
02 - 1/2 cup unsweetened cocoa powder
03 - 1 teaspoon baking soda
04 - 1/2 teaspoon salt
05 - 1 cup granulated sugar
06 - 1/2 cup unsalted butter, softened
07 - 1 large egg
08 - 1 cup buttermilk
09 - 1 teaspoon vanilla extract

→ Marshmallow Filling

10 - 1/2 cup unsalted butter, softened
11 - 1 1/4 cups powdered sugar
12 - 1 jar marshmallow creme (7 oz)
13 - 1 teaspoon vanilla extract
14 - Pinch of salt

# How-To Steps:

01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, cocoa powder, baking soda, and salt in a medium bowl.
03 - Beat butter and sugar in a large bowl until light and fluffy, about 2 minutes. Add egg and beat until combined.
04 - Mix in buttermilk and vanilla extract. The batter may appear curdled—this is normal.
05 - Gradually add dry ingredients to wet ingredients, mixing until just combined.
06 - Drop rounds of batter (about 2 tablespoons each) onto prepared baking sheets, spacing 2 inches apart.
07 - Bake for 10–12 minutes until tops spring back when pressed. Cool completely on wire rack.
08 - Beat butter until creamy. Add powdered sugar and beat until smooth. Mix in marshmallow creme, vanilla, and salt until fluffy.
09 - Spread filling onto flat side of half the cookies. Top with remaining cookies, flat side down.
10 - Serve immediately or store in airtight container for up to 3 days.

# Expert Advice:

01 -
  • These are like portable chocolate cake with a sweet surprise center
  • The marshmallow filling is pillowy and nostalgic in the best way
02 -
  • The batter might look curdled when you add buttermilk and this is completely normal
  • Let the cookies cool completely before filling or the marshmallow will melt right off
03 -
  • Use a cookie scoop for uniform cookies that bake evenly
  • If you don't have buttermilk, add a tablespoon of vinegar to regular milk and let it sit for five minutes

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