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Decadent Brownie Cookie Sandwich: A Perfect Indulgence

Imagine the perfect dessert: rich, fudgy brownie cookies with crisp edges, sandwiching a creamy, peanut butter frosting. These Decadent Brownie Cookie Sandwiches are indulgent, irresistible, and surprisingly easy to make. Whether for a special occasion or a weekend treat, they’re guaranteed to impress.

Ingredients

Scale
  • 1 stick (1/2 cup or 115g) unsalted butter
  • 10 oz (300g) dark chocolate chips
  • 1 cup + 2 tbsp caster sugar
  • 3 large eggs
  • 2 tbsp cocoa powder
  • 1 tsp vanilla extract
  • 1/2 tsp salt
  • 1/2 tsp baking powder
  • 3/4 cup plain flour
  • 1/2 cup dark chocolate chips (additional)

Peanut Butter Frosting:

  • 1 cup smooth peanut butter
  • 1 cup confectioners’ sugar
  • 5 tbsp (70g) unsalted butter, softened
  • 3/4 tsp vanilla extract
  • 1/4 tsp salt
  • 1/3 cup heavy cream

Instructions

Prepare the Oven and Baking Trays:

  • Preheat the oven to 350°F (180°C).
  • Line two baking trays with parchment paper.

2. Melt the Butter and Chocolate:

  • In a heatproof bowl over simmering water (double boiler method), melt the butter and 10 oz chocolate chips. Stir until smooth, then set aside to cool slightly.

3. Mix the Eggs, Cocoa Powder, and Sugar:

  • In a separate bowl, beat the eggs, cocoa powder, and caster sugar on high speed for 3 minutes using a stand mixer or hand mixer.

4. Combine the Wet Ingredients:

  • Gradually mix 1/3 of the melted chocolate mixture into the egg mixture. Stir well, then add the rest of the chocolate mixture until fully combined.

5. Add the Dry Ingredients:

  • Mix in the vanilla extract, salt, and baking powder.
  • Fold in the flour until just combined, then gently stir in the additional 1/2 cup of chocolate chips.

6. Scoop and Bake:

  • Drop 2-tablespoon mounds of batter onto the baking trays, leaving 2 inches between each cookie. For smaller cookies, use 1 tablespoon of batter per mound.
  • Bake for 15–20 minutes for larger cookies or 10–15 minutes for smaller ones. Cool on the tray for 5–10 minutes before transferring to a wire rack.

7. Make the Peanut Butter Frosting:

  • Beat the peanut butter, confectioners’ sugar, softened butter, vanilla extract, and salt on high speed for 5 minutes until creamy.
  • Add the heavy cream and beat for an additional 2 minutes until fluffy. Chill if needed for easier spreading.

8. Assemble the Sandwiches:

  • Spread a generous layer of frosting on the flat side of one cookie.
  • Top with another cookie to create a sandwich.
  • Repeat with remaining cookies and frosting.

Notes

  • Chill the Batter: To prevent cookies from spreading too much, chill the batter for 20 minutes before baking.
  • Use High-Quality Chocolate: For the best flavor, choose rich, dark chocolate.
  • Customize the Frosting: Swap peanut butter for almond butter or hazelnut spread for a different twist.
  • Storage:
    • Room Temperature: Store in an airtight container for up to 3 days.
    • Refrigerator: Keep for up to 1 week; bring to room temperature before serving.
    • Freezer: Wrap individually and freeze for up to 2 months.