Whoopie pies are a classic treat made of two soft, cakey chocolate cookies sandwiched together with a creamy filling. They are like handheld chocolate cakes with a fluffy, sweet center.
Ingredients (Makes 10 Whoopie Pies)
For the Chocolate Cakes:
- 2 cups (250g) all-purpose flour
- ½ cup (40g) unsweetened cocoa powder
- 1 teaspoon baking soda
- ½ teaspoon salt
- ½ cup (115g) unsalted butter, softened
- 1 cup (200g) granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1 cup (240ml) buttermilk
For the Creamy Filling:
- ¾ cup (170g) unsalted butter, softened
- 1 ½ cups (190g) powdered sugar
- 1 teaspoon vanilla extract
- 1 jar (7 ounces / 200g) marshmallow fluff
Instructions
1. Make the Chocolate Cakes
- Preheat your oven to 175°C (350°F). Line two baking sheets with parchment paper.
- In a bowl, whisk together the flour, cocoa powder, baking soda, and salt.
- In a separate large bowl, beat the butter and sugar until light and fluffy.
- Add the egg and vanilla extract, mixing until combined.
- Gradually mix in the dry ingredients, alternating with the buttermilk, until smooth.
2. Bake the Cakes
- Drop tablespoon-sized mounds of batter onto the prepared baking sheets, spacing them 2 inches apart.
- Bake for 10-12 minutes, or until the tops spring back when lightly touched.
- Let the cakes cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
3. Make the Filling
- In a bowl, beat the butter until smooth.
- Gradually add the powdered sugar and vanilla, mixing until fluffy.
- Gently fold in the marshmallow fluff until well combined.
4. Assemble the Whoopie Pies
- Spread or pipe a generous layer of filling onto the flat side of one cake.
- Place another cake on top, pressing gently to sandwich them together.
- Repeat with the remaining cakes and filling.
Tips for Perfect Whoopie Pies
✔ Use buttermilk for a soft and tender texture.
✔ Chill the filling for 10-15 minutes before assembling for easier handling.
✔ Store in an airtight container at room temperature for up to 2 days or in the fridge for up to 5 days.
✔ For variations, add mini chocolate chips to the filling or use a peanut butter filling instead.
These classic whoopie pies are soft, sweet, and absolutely delicious!