Chocolate Grasshopper Whoopie Pies with Minty Green Buttercream | TASTE

Ingredients

• ⅔ c Dutch- processed cocoa powder
• ½ c very hot tap water
• 1 tsp espresso powder (optional)
• 1 c packed light brown sugar
• ½ c vegetable oil
• 2 tsp vanilla extract
• 1 lg egg
• ¼ c buttermilk
• 1 tsp baking soda
• ½ tsp baking powder
• ½ tsp kosher salt
• 1 ½ c all- purpose flour
• ½ c unsalted butter, at room temperature
• ½ tsp peppermint extract
• ¼ tsp kosher salt
• 2 c confectioners’ sugar
• 2-3 tbsp heavy cream, at room temperature
• 1-2 drops green food coloring
• Green sparkling sugar for decorating