Easy Brownie Cookie Sandwiches
Easy Brownie Cookie Sandwiches (Rich, Fudgy & Filled with Cookie Dough Buttercream)
If you’re torn between brownies, cookies, and cookie dough, why choose just one? These Easy Brownie Cookie Sandwiches combine everything you love into one unforgettable dessert. Rich, chewy brownie cookies are sandwiched together with a fluffy cookie dough buttercream that’s sweet, creamy, and completely irresistible.
Made with browned butter, bittersweet chocolate, Dutch-process cocoa powder, and a touch of espresso powder, these cookies have an incredibly deep chocolate flavor that’s perfectly balanced by the buttery cookie dough filling. They’re soft in the center, slightly crisp around the edges, and guaranteed to impress anyone lucky enough to grab one.
Whether you’re baking for birthdays, holidays, bake sales, or simply treating yourself, these brownie cookie sandwiches are a show-stopping dessert everyone will remember.
Why You’ll Love These Brownie Cookie Sandwiches
- Rich, chewy brownie cookies
- Fluffy cookie dough buttercream
- Bakery-style dessert at home
- Perfect for chocolate lovers
- Great for parties and celebrations
- Easy to make ahead
If you love brownies and cookies equally, this recipe truly gives you the best of both worlds.
What Makes These Cookie Sandwiches So Special?
The secret starts with browned butter.
Instead of simply melting the butter, browning it adds deep caramel-like notes that make the chocolate flavor even richer. Combined with bittersweet chocolate and Dutch-process cocoa powder, the result is a cookie that’s incredibly fudgy with crisp edges and soft centers.
The homemade cookie dough buttercream takes these sandwiches to another level. Unlike traditional frosting, it has the flavor of edible cookie dough while remaining light enough to pipe beautifully between the cookies.
Ingredients You’ll Need
Brownie Cookies
- ½ cup unsalted butter
- 8 ounces bittersweet chocolate
- ¾ cup granulated sugar
- ¾ cup packed brown sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 1 cup all-purpose flour
- ¾ cup bread flour
- ¼ cup Dutch-process cocoa powder
- 1 teaspoon baking powder
- ½ teaspoon baking soda
- ¾ teaspoon salt
- 1 teaspoon espresso powder (optional)
Cookie Dough Buttercream
- ¾ cup softened unsalted butter
- ½ cup packed brown sugar
- 2½ cups powdered sugar
- ½ cup heat-treated all-purpose flour
- 1 teaspoon vanilla extract
- ¼ teaspoon salt
- 3–4 tablespoons heavy cream
Tools used for this recipe
Buy Now → 
Buy Now → 
Buy Now → Why Brown the Butter?
Browning the butter creates rich toasted flavors that make these cookies taste like they came from a gourmet bakery.
The butter develops nutty notes that pair beautifully with chocolate and brown sugar.
It’s a simple extra step that makes a huge difference.
How to Make Brownie Cookie Sandwiches
Step 1: Brown the Butter
In a small saucepan over medium heat, melt the butter.
Continue cooking until it turns golden brown and smells nutty.
Remove from the heat and allow it to cool for about 10 minutes.
Step 2: Melt the Chocolate
Add the chopped bittersweet chocolate to the warm browned butter.
Stir until completely smooth.
Allow the mixture to cool slightly.
Step 3: Mix the Dough
In a separate bowl, whisk together:
- All-purpose flour
- Bread flour
- Dutch-process cocoa powder
- Baking powder
- Baking soda
- Salt
- Espresso powder
In a large bowl, beat together:
- Brown sugar
- Granulated sugar
- Eggs
- Vanilla extract
Mix until smooth and slightly lightened.
Stir in the melted chocolate mixture.
Gradually add the dry ingredients and mix just until incorporated.
Cover and refrigerate the cookie dough for 30 minutes.
Chilling helps prevent spreading and creates thicker, chewier brownie cookies.
Step 4: Bake the Cookies
Preheat your oven to 350°F.
Line your baking sheets with parchment paper.
Using a cookie scoop, portion about 2 tablespoons of dough per cookie.
Leave about 2 inches between each cookie.
Bake for 8–10 minutes.
The edges should be set while the centers remain soft.
Allow the cookies to cool on the baking sheets for 10 minutes before transferring them to a wire rack.
Step 5: Make the Cookie Dough Buttercream
Beat the softened butter until light and fluffy.
Add:
- Brown sugar
- Powdered sugar
- Heat-treated flour
Mix until smooth.
Add:
- Vanilla extract
- Salt
Slowly mix in the heavy cream until the buttercream becomes light, fluffy, and easy to spread.
Step 6: Assemble the Sandwich Cookies
Pair cookies of similar size.
Spread or pipe a generous amount of cookie dough buttercream onto one cookie.
Top with another cookie and gently press together.
Repeat until all the brownie cookie sandwiches are assembled.
Helpful Tips for Perfect Brownie Cookie Sandwiches
Chill the Dough
Cold dough creates thicker cookies with chewy centers.
Use Room Temperature Eggs
Room temperature eggs blend more smoothly into the batter.
Don’t Overbake
The cookies should still appear slightly soft in the center when removed from the oven.
Match Cookie Sizes
Pairing similarly sized cookies makes the finished sandwiches look more professional.
Easy Variations
Want to change things up?
Try adding:
- Chocolate chips
- Peanut butter chips
- Mini peanut butter cups
- Chopped pecans
- Crushed Oreos
- Caramel drizzle
You could even swap the cookie dough buttercream for peanut butter frosting if you’re a peanut butter fan.
What to Serve with Brownie Cookie Sandwiches
These rich cookies pair perfectly with:
- Cold milk
- Coffee
- Hot chocolate
- Vanilla ice cream
- Salted caramel ice cream
They’re also wonderful on holiday cookie trays or dessert tables.
More Dessert Recipes Your Readers Will Love
If your readers enjoy these Easy Brownie Cookie Sandwiches, they’ll also love these dessert recipes from Krystel’s Cooking:
- Easy Chocolate Salted Caramel Cookies
- Easy Oatmeal Cream Pies
- Easy Oreo Cookie Cupcakes
- Easy Chocolate Snickers Cupcakes
- Reese’s Chocolate Cupcakes
- Fruity Pebbles White Chocolate Cookies
- Apple Cinnamon Cobbler
- The Best Strawberry Shortcake
These recipes are perfect for parties, bake sales, birthdays, and holiday dessert trays.
Storage Instructions
Store assembled brownie cookie sandwiches in an airtight container in the refrigerator for up to 5 days.
For the best texture, allow them to sit at room temperature for about 15 minutes before serving.
You can also freeze the assembled sandwiches for up to 2 months.
Easy Brownie Cookie Sandwiches
Ingredients
- For the Brownie Cookies:
- ½ cup unsalted butter, browned
- 8 ounces bittersweet chocolate, chopped
- ¾ cup granulated sugar
- ¾ cup packed dark brown sugar
- 2 large eggs, room temperature
- 2 teaspoons vanilla extract
- 1 cup all-purpose flour
- ¾ cup bread flour
- ¼ cup Dutch-process cocoa powder
- 1 teaspoon baking powder
- ½ teaspoon baking soda
- ¾ teaspoon salt
- 1 teaspoon espresso powder, optional, but recommended
- For the Cookie Dough Buttercream
- ¾ cup unsalted butter, softened
- ½ cup packed brown sugar
- 2½ cups powdered sugar
- ½ cup heat-treated all-purpose flour
- 1 teaspoon vanilla extract
- ¼ teaspoon salt
- 3 –4 tablespoons heavy cream
Instructions
- In a small saucepan over medium heat, melt the butter. Continue cooking until it turns golden brown and smells nutty. Remove from heat and let cool for about 10 minutes.
- Combine the chopped chocolate with the cooled browned butter and stir until smooth. Let it cool slightly.
- In a bowl, whisk together the all-purpose flour, bread flour, cocoa powder, baking powder, baking soda, salt, and espresso powder.
- In a separate large bowl, beat the granulated sugar, brown sugar, and eggs until slightly lightened and smooth. Mix in the vanilla.
- Add the melted chocolate mixture and stir until combined.
- Gradually add the dry ingredients, mixing just until incorporated.
- Cover and chill the dough for 30 minutes.
- Preheat oven to 350°F and line baking sheets with parchment paper.
- Scoop about 2 tablespoons of dough per cookie and place 2 inches apart.
- Bake for 8–10 minutes, until the edges are set but the centers are still soft.
- Let cool on the baking sheet for 10 minutes, then transfer to a rack to cool completely.
- Beat the softened butter and brown sugar until light and fluffy.
- Add the powdered sugar and heat-treated flour gradually, mixing until smooth.
- Mix in the vanilla and salt.
- Add heavy cream, 1 tablespoon at a time, until the filling is soft, fluffy, and spreadable.
- Pair cookies by similar size.
- Spread or pipe a generous layer of cookie dough buttercream onto the flat side of one cookie, then top with another cookie.
- Gently press together.
Frequently Asked Questions
Can I skip the espresso powder?
Yes. The espresso powder simply enhances the chocolate flavor without making the cookies taste like coffee.
Why do I need bread flour?
Bread flour helps create a chewier brownie cookie texture.
Can I make the buttercream ahead?
Absolutely. Store it covered in the refrigerator and let it soften before using.
Can I freeze the cookie dough?
Yes. Scoop the dough into balls and freeze until ready to bake.
Can I use chocolate chips instead of chopped chocolate?
Yes, but chopped bittersweet chocolate melts more smoothly and creates a richer brownie flavor.
Final Thoughts
These Easy Brownie Cookie Sandwiches are the ultimate dessert for serious chocolate lovers. Rich brownie cookies, fluffy cookie dough buttercream, and perfectly chewy centers make every bite completely irresistible.
Whether you’re baking them for a celebration or simply because you’re craving something extra special, these cookie sandwiches are guaranteed to become one of your favorite desserts. Happy baking!
