These Blueberry Lemon Whoopie Pies with White Chocolate Buttercream are soft, cake-like cookies filled with fresh blueberries, zesty lemon, and creamy frosting. Serve them sandwiched as whoopie pies or as individually frosted cookies for a bright and elegant dessert.
Preheat oven to 350 °F (177 °C). Line baking sheet with parchment paper or a silicone mat. Set aside
In a bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside
In the bowl, beat the butter and sugar until smooth with a hand mixer. Then beat in the egg, vanilla extract, and lemon zest. Beat until smooth.
Add the flour mixture to the butter mixture, alternating with the buttermilk. Scrape down the sides of the bowl as necessary. Mix until just combined. Gently fold in the blueberries.
Use a scoop to drop about 2 tablespoons of batter onto your prepared baking sheet about 2 inches apart. You should have 12 scoops on the baking sheet.
Bake for 10-12 minutes or until the edges start to brown. Allow the "cake-cookies" to cool on the baking sheets for 1-2 minutes before transferring to a cooling rack.
White Chocolate Buttercream
In a large bowl, whip softened butter with a hand mixer until smooth
Finely chop white chocolate into pieces or place in food processor. Add to buttercream and combine
Gradually add powdered sugar , scraping down the sides and bottom of the bowl periodically to ensure that all ingredients are well combined.
With mixer on low-speed, gradually add heavy cream to frosting. Gradually increase speed to high and beat for 30-60 seconds or until desired consistency is reached
Pipe or spread frosting onto prepared, cooled baked goods