Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C) and line two baking sheets with parchment paper.
- In a medium bowl, whisk together flour, cocoa powder, baking powder, baking soda, and salt.
- Cream softened butter with brown sugar for 3 minutes until light and fluffy.
- Add egg and vanilla extract, beating until fully incorporated.
- Alternate adding dry ingredients and buttermilk to butter mixture, beginning and ending with dry ingredients.
- Drop rounded tablespoons of batter onto prepared baking sheets, spacing 2 inches apart.
- Bake 12-15 minutes until cookies are set and spring back when touched. Cool on wire racks completely.
- Beat softened butter until creamy, add peanut butter and mix until smooth.
- Gradually add powdered sugar, then vanilla and cream until spreadable consistency is reached.
- Heat heavy cream until simmering, pour over chocolate chips, let sit 2 minutes, then whisk until smooth.
- Spread peanut butter filling on flat side of half the cookies, add ganache layer on top.
- Top with remaining cookies and dust with powdered sugar before serving.
Notes
Store in airtight container at room temperature for up to 3 days or refrigerate for 5 days. Can be frozen for up to 2 months. For variations, add espresso powder to cookies or mini chocolate chips to filling.