Brownie cookie sandwiches with cookie dough buttercream dessert on wooden board

If you’re craving a dessert that’s both fudgy and chewy with a creamy twist, these brownie cookie sandwiches with cookie dough buttercream are exactly what you need. This recipe combines the best of both worlds: rich brownies form the perfect base cookie, while a luscious cookie dough buttercream filling makes every bite irresistible.

Brownie cookie sandwiches with cookie dough buttercream dessert on wooden board this Recipe
Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe 3 Discover how to make decadent brownie cookie sandwiches with cookie dough buttercream for a sweet, crowd-pleasing treat everyone will enjoy.

You’ll love making these treats at home because they’re not only crowd-pleasers, but they also come together with simple ingredients and straightforward baking steps. Whether for a party, special occasion, or just a sweet indulgence, these brownie cookie sandwiches will become a new favorite.

Why You’ll Love This Recipe

  • Combines fudgy brownies and chewy cookies into one delightful sandwich.
  • Cookie dough buttercream adds a creamy, nostalgic flavor twist.
  • Easy to make with pantry staples and simple baking techniques.
  • Perfectly portioned for sharing or gifting.
  • Customizable with chocolate chips or nuts for extra texture.

Ingredients

Gather these ingredients to make both the brownie cookie sandwiches and the cookie dough buttercream filling.

  • 1 cup unsalted butter, melted
  • 1 cup granulated sugar
  • 1 cup packed light brown sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 1 cup all-purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1 cup mini chocolate chips (optional)
  • 1/2 cup unsalted butter, softened (for buttercream)
  • 1 cup powdered sugar
  • 1/4 cup light brown sugar (for buttercream)
  • 2 tablespoons heavy cream
  • 1 teaspoon vanilla extract (for buttercream)
  • 1/4 teaspoon salt (for buttercream)
  • 1/3 cup all-purpose flour, heat-treated (for cookie dough buttercream)
  • 1/2 cup mini chocolate chips (for buttercream)

Recipe Details

  • Prep Time: 25 minutes
  • Cook Time: 15 minutes
  • Total Time: 40 minutes
  • Servings: 12 sandwich cookies
  • Calories: Approximately 350 per serving

How to Make Brownie Cookie Sandwiches with Cookie Dough Buttercream – Home By Heather

  1. Preheat your oven to 350°F and line two baking sheets with parchment paper.
  2. In a large bowl, whisk together the melted butter, granulated sugar, and brown sugar until smooth and creamy.
  3. Add the eggs one at a time, mixing well after each addition, then stir in vanilla extract.
  4. Sift in the flour, cocoa powder, baking powder, and salt, then fold until just combined. Stir in mini chocolate chips if using.
  5. Using a tablespoon or cookie scoop, drop dough onto the prepared sheets, spacing them about 2 inches apart, and gently flatten each mound to about 2 inches wide.
  6. Bake for 12-15 minutes, until edges are set but centers remain soft; allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack.
  7. While cookies cool, prepare the cookie dough buttercream by beating softened butter on medium speed until fluffy. Gradually add powdered sugar, brown sugar, and salt, then beat in vanilla extract and heavy cream until smooth.
  8. Stir in the heat-treated flour and mini chocolate chips to create the cookie dough texture in the buttercream.
  9. Once cookies are completely cool, spread about 2 tablespoons of buttercream on the flat side of one cookie and sandwich with another. Repeat for remaining cookies and chill for 15 minutes before serving.

Tips for the Best Results

  • Use room temperature eggs and butter for smoother mixing and better texture.
  • Heat-treat the flour used in the buttercream by microwaving it for 1-2 minutes to eliminate any bacteria.
  • Don’t overbake the brownie cookies to keep them chewy and soft.
  • Chill the assembled sandwiches briefly to help the buttercream set and prevent messiness.
  • Customize your filling by adding nuts, sprinkles, or even a pinch of sea salt on top.

Storage and Reheating

Store your brownie cookie sandwiches in an airtight container in the refrigerator for up to 5 days. The buttercream stays fresh, and the brownie cookies remain delightfully soft.

For longer storage, freeze the sandwiches individually wrapped in plastic wrap and then placed in a freezer-safe bag for up to 2 months. Thaw in the refrigerator before serving; no reheating needed.

Frequently Asked Questions

Can I substitute ingredients to make these gluten-free?

Yes, you can use a gluten-free all-purpose flour blend in both the brownie cookie dough and the buttercream. Just make sure the blend contains xanthan gum or similar stabilizers for best texture.

Is it safe to eat raw flour in the cookie dough buttercream?

Raw flour can contain harmful bacteria, so it’s important to heat-treat the flour by microwaving it or baking it at 350°F for 5 minutes before adding it to the buttercream.

Can I make these sandwiches ahead of time?

Absolutely! You can assemble the sandwiches a day ahead and store them in the fridge. Just bring them to room temperature before serving for the best flavor and texture.

What’s the best way to make the brownies chewy instead of cakey?

To keep the brownie cookies chewy, slightly underbake them so the centers remain soft. Also, use melted butter and avoid overmixing the batter.

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