Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

ByLucy
Jump to Recipe· 4.5 from 3 reviews

If you’re on the hunt for a dessert that’s the ultimate crowd-pleaser, you’ve got to try my Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe. Imagine fudgy, chocolatey brownie cookies hugging a luscious, smooth cookie dough buttercream that’ll make your taste buds do a happy dance. This recipe is seriously one of my all-time favorites to make when I want to impress without fuss. Stick around, I’ll walk you through every step so you can make these at home and wow your friends and family too.

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Why This Recipe Works

  • Balanced Texture: The brownie cookies are chewy and fudgy, while the buttercream is smooth and creamy, creating a perfect sandwich bite.
  • Heat-Treated Flour: Using heat-treated flour in the buttercream makes it safe to eat raw while keeping that authentic cookie dough flavor.
  • Flavor Harmony: Bittersweet chocolate in the cookies paired with brown sugar in the buttercream adds depth to each bite.
  • Simple Yet Impressive: This recipe allows you to make something fancy without complicated techniques or weird ingredients.
Brownie Cookie Sandwiches with Cookie Dough Buttercream, chocolate brownie cookie sandwiches, cookie dough buttercream filling, easy dessert recipes, crowd-pleasing treats - The image shows several sandwich cookies stacked closely together in rows, each cookie having two dark brown, slightly cracked textured chocolate layers, with a thick, swirled off-white cream layer in the middle, giving a soft and creamy look. One cookie in the middle has a bite taken out, showing the smooth cream contrasted with the crumbly chocolate cookie. The cookies are placed on a white marbled surface, filling up the photo frame fully. photo taken with an iphone --ar 2:3 --v 7 this …

Ingredients & Why They Work

The magic behind this Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe lies in choosing ingredients that complement each other beautifully. The mix of bittersweet chocolate and two types of flour creates a wonderfully chewy yet tender cookie, and the buttercream is full of cookie dough goodness thanks to the careful heat treating and balance of sugars. Here’s a quick peek at why each ingredient matters.

Brownie Cookie Sandwiches with Cookie Dough Buttercream, chocolate brownie cookie sandwiches, cookie dough buttercream filling, easy dessert recipes, crowd-pleasing treats - Flat lay of a small pile of unsalted butter sticks with one partially unwrapped, a heap of bittersweet chocolate chips, two white ceramic bowls—one filled with light brown sugar crystals and one with granulated sugar, three whole brown eggs with clean shells, a bunch of pure white all-purpose flour slightly spilled beside a bowl, another heap of bread flour, a small white bowl holding smooth Dutch process cocoa powder, a white bowl containing fine confectioners sugar, a fresh vanilla bean pod, a few sprigs of flaky sea salt crystals on a white ceramic dish, and a small white bowl with heavy cream, all arranged symmetrically in realistic proportions on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997
  • Unsalted Butter: Essential for that rich, creamy texture in both cookies and buttercream, plus it lets the chocolate and sugars shine.
  • Bittersweet Chocolate Chips: Gives the brownie cookies their deep chocolaty flavor without being overly sweet.
  • Granulated and Brown Sugar: The combo adds moisture and a hint of caramelized flavor, especially in the buttercream.
  • Eggs: Bind everything together and also contribute to the cookie’s chewy texture.
  • All-Purpose and Bread Flour: Bread flour adds that extra chewiness, but you can substitute with all-purpose if needed.
  • Dutch Process Cocoa Powder: Provides a rich, smooth cocoa taste and beautiful dark color.
  • Baking Powder & Baking Soda: These leavening agents help the cookies rise just enough without puffing too much.
  • Vanilla: A small addition but crucial for bringing all the flavors together in both cookies and buttercream.
  • Confectioners Sugar: Creates that silky texture in the buttercream.
  • Flour (for buttercream): Heat treated to make the cookie dough buttercream safe and still deliciously authentic.
  • Heavy Cream: Adjusts the buttercream to the perfect spreadable consistency.
  • Salt: Balances the sweetness and enhances overall flavor depth.
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Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Make It Your Way

One of my favorite things about this Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe is how easy it is to customize. Whether you want to amp up the chocolate, add some texture, or make it a little less sweet, there are plenty of ways to make this recipe your own.

  • Nutty Twist: I once stirred in a handful of toasted pecans into the cookie dough—it added the perfect crunch and a warm nuttiness that paired beautifully with the chocolate.
  • Gluten-Free Option: Try swapping the flours for a gluten-free blend—just make sure it includes xanthan gum to keep that chewy texture.
  • Salted Caramel Delight: Drizzle a little salted caramel sauce inside the sandwiches after piping the buttercream for an indulgent surprise.

Step-by-Step: How I Make Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

Step 1: Heat-Treat the Flour for Safety

This step is a game-changer for enjoying cookie dough buttercream safely! Spread a little extra flour on a baking sheet (I usually add half a cup more just in case) and bake it at 300°F for about 5-8 minutes. Keep an eye on it and stir every couple of minutes—the goal is to heat it till it reaches 165°F. Then, let it cool completely before mixing it into your buttercream. Trust me, it’s worth doing, so you can enjoy that cookie dough flavor without the worry.

Step 2: Melt the Chocolate and Butter Perfectly

I like to use a double boiler for melting, but if you don’t have one, a heatproof bowl over simmering water works just as well. Stir often to keep the mixture silky and smooth. Remove from the heat just as it’s melted and let it cool for a few minutes before whisking in the eggs and sugars. This keeps the eggs from scrambling and gives your brownie cookies that perfect fudgy texture.

Step 3: Mix Dry Ingredients & Combine Gently

Sifting those dry ingredients together beforehand makes mixing easier and helps avoid clumps. When you stir them into the wet chocolate mix, go slow and don’t overmix—it’s tempting to mix it all up quickly, but overworking the dough can make your cookies tough, which we definitely don’t want.

Step 4: Chill and Scoop With Precision

If you can, chill your dough for 30 minutes—it helps the cookies hold their shape better in the oven. I use a small cookie scoop and sometimes a kitchen scale to keep them consistent. The dough balls I make usually weigh around 0.07 to 0.08 ounces each—that size bakes into a perfect bite-sized cookie for sandwiches.

Step 5: Bake and Shape While Warm

Bake those cookies at 350°F for about 8-10 minutes. I keep a close eye—the edges should set while the center puffs up and cracks just a little. The real trick? When they come out warm, use the inside arch of a fork or a round cutter to nudge or swirl the edges inward for pretty, uniform rounds. It’s a step that makes the sandwiches look pro with just a bit of extra love.

Step 6: Whip Up That Dreamy Cookie Dough Buttercream

Start by creaming softened butter with brown sugar until it feels airy and fluffy—this took me a few tries to get right, but now it’s easy. Add your sifted powdered sugar and heat-treated flour a bit at a time, then vanilla, salt, and heavy cream until you hit that smooth but firm consistency. Pipe it onto the flat side of a cookie, top with another, and voilà—you’ve got yourself a sandwich that’s both nostalgic and luxe!

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Tips from My Kitchen

  • Room Temperature Eggs: Let your eggs come to room temp before mixing—it helps the batter blend more smoothly without clumps.
  • Don’t Skip Chilling: Chilling the cookie dough a bit makes a world of difference for shape and chewiness after baking.
  • Fork or Cutter Hack: Shaping warm cookies might feel tedious but it’s what gives those cookies a polished, bakery look.
  • Watch the Oven Time: These cookies can go from fudge-perfect to dry quickly, so keep close tabs on them as they bake.

How to Serve Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

Brownie Cookie Sandwiches with Cookie Dough Buttercream, chocolate brownie cookie sandwiches, cookie dough buttercream filling, easy dessert recipes, crowd-pleasing treats - The image shows several chocolate sandwich cookies placed on crumpled white paper over a white marbled surface. Each cookie has two dark brown, rich textured chocolate layers with a thick, smooth, cream-colored filling in the middle. The cookies are arranged in a casual, scattered way, with one white bowl filled with dark chocolate chips near the bottom center. The overall look is rich and inviting, with the contrast between the dark chocolate and light filling clearly visible photo taken with an iphone --ar 2:3 --v 7

Garnishes

I personally love sprinkling a tiny pinch of flaky sea salt on top of each sandwich. It cuts through the sweetness in a way that’s unexpectedly delightful. Sometimes, if I’m feeling fancy, I’ll add a few mini chocolate chips or a light dusting of cocoa powder for an extra hint of indulgence.

Side Dishes

These sandwiches are pretty much a showstopper on their own, but I enjoy serving them alongside a drizzle of fresh berry compote or a scoop of vanilla ice cream to balance the richness. If you’re serving at a party, a small bowl of tangy Greek yogurt dip with honey is a surprisingly good match!

Creative Ways to Present

For birthdays or special events, I’ve arranged them like little edible bouquets in decorative boxes or trays lined with parchment. Wrapping each sandwich in colorful baking parchment and tying with twine turns them into charming individual gifts. They also look great stacked inside a mason jar as a fun edible centerpiece!

Make Ahead and Storage

Storing Leftovers

I keep these cookie sandwiches in an airtight container in the fridge if I’m not eating them right away. This keeps the buttercream fresh and the cookie slightly firm. They last well for about 3 days like this, but honestly, they rarely last that long in my kitchen!

Freezing

When I freeze them, I place the cookies separately on a baking sheet until firm—usually about an hour—before sandwiching and wrapping each in plastic wrap. Then, into a freezer bag they go. Frozen, they keep beautifully for up to 2 months and thaw quickly at room temperature when ready to enjoy.

Reheating

If I want that “just-baked” warmth, I pop a sandwich in the microwave for about 10 seconds—just enough to soften the buttercream slightly but not melt it completely. It’s my favorite way to enjoy these treats fresh out of the fridge.

FAQs

  1. Can I use regular all-purpose flour instead of bread flour for the brownie cookies?

    Absolutely! Bread flour adds chewiness due to its higher protein content, but if you don’t have it on hand, just use more all-purpose flour. Your cookies will still be deliciously tender and rich.

  2. Why do I need to heat treat the flour for the buttercream?

    Since the buttercream includes raw flour to mimic cookie dough, heat treating it kills any harmful bacteria, making the flour safe to eat without altering flavor or texture.

  3. Can I make these sandwiches ahead for a party?

    Yes! You can bake and cool the cookies ahead, make the buttercream, and assemble the sandwiches a few hours before serving. Keeping them chilled helps maintain their freshness and shape.

  4. How do I know when not to overbake the brownie cookies?

    Look for set edges and a center that puffs up and cracks slightly. The cookies might look a little underdone, but they’ll firm up as they cool, keeping that perfect fudgy texture.

  5. Can I substitute the bittersweet chocolate chips for milk chocolate?

    You can, but bittersweet chocolate gives a richer, less sweet depth that nicely balances the sweetness of the buttercream. Milk chocolate will yield a sweeter, lighter flavor overall.

Final Thoughts

This Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe holds a special place in my heart because it combines my love for brownies, cookies, and that nostalgic cookie dough flavor all in one. It’s always a hit, no matter who I share it with, and it never fails to make me smile while baking because it’s just so darn fun to make. If you’re looking for a recipe that’s truly indulgent yet approachable, I can’t recommend this enough. So grab your apron and get ready to create some amazing memories (and treats!).

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Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.5 from 3 reviews
  • Author: Lucy
  • Prep Time: 30 minutes
  • Cook Time: 10 minutes
  • Total Time: 40 minutes
  • Yield: 20 cookies
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian
Print Recipe

Description

Indulge in decadent Brownie Cookie Sandwiches filled with a creamy cookie dough buttercream. These rich, fudgy brownie cookies combined with a smooth and sweet homemade buttercream make the perfect treat for any occasion. The recipe includes a heat treatment step for flour to ensure safety in the no-bake buttercream filling, resulting in a safe and scrumptious dessert sandwich.

Ingredients

Units Scale

Brownie Cookies

  • 8 tablespoons unsalted butter (113 g)
  • 9 ounces bittersweet chocolate chips or chopped chocolate
  • 3/4 cup plus 2 tablespoons granulated sugar (175 g)
  • 1/2 cup light brown sugar, packed (100 g)
  • 3 large eggs, room temperature
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour, spooned and leveled (125 g)
  • 3/4 cup bread flour, spooned and leveled (95 g) (substitute with more all-purpose if unavailable)
  • 1/4 cup Dutch process cocoa powder, sifted (25 g)
  • 1 teaspoon baking powder
  • 3/4 teaspoon salt
  • 1 teaspoon baking soda

Cookie Dough Buttercream

  • 12 tablespoons unsalted butter, room temperature (170 g)
  • 1/2 cup brown sugar (100 g)
  • 2 1/2 cups confectioners sugar, sifted (300 g)
  • 1/2 cup all-purpose flour (65 g) (heat treated)
  • 1 teaspoon vanilla extract
  • 1/4 teaspoon salt
  • 3-4 tablespoons heavy cream

Instructions

  1. Heat Treat Flour: Spread 1/2 cup more flour than needed for the buttercream onto a clean, dry baking sheet. Bake at 300°F for 5-8 minutes, stirring and rotating every 2 minutes until the flour reaches 165°F. Remove and cool completely before use to ensure safety.
  2. Melt Chocolate and Butter: Place chocolate and butter in a bowl over a double boiler on medium heat. Stir frequently until fully melted and smooth. Remove from heat and let cool slightly.
  3. Mix Dry Ingredients: In a separate bowl, whisk together all-purpose flour, bread flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
  4. Combine Wet Ingredients: In the stand mixer bowl with melted chocolate mixture, add eggs, brown sugar, and granulated sugar. Mix on medium-low speed until well combined, then add vanilla and mix again.
  5. Add Dry Ingredients: Add the dry ingredients to the wet mixture and mix just until flour is fully incorporated. Avoid overmixing to maintain texture.
  6. Chill Dough: Cover the bowl tightly with plastic wrap and chill the dough for 30 minutes to firm up.
  7. Prepare Oven and Baking Sheets: Preheat oven to 350°F. Line two baking sheets with parchment paper and set aside.
  8. Portion Dough: Use a small cookie scoop or kitchen scale to portion dough balls weighing 0.07-0.08 ounces each. Place on baking sheets spaced about 2 inches apart.
  9. Bake Cookies: Bake for 10 minutes or until edges are set and centers puff and crack slightly. Avoid overbaking.
  10. Shape Cookies: While still warm, use the inside arch of a fork or a round cookie cutter to gently nudge or swirl the edges inward for uniform rounds. Cool on baking sheet for 8-10 minutes, then transfer to wire rack to cool completely.
  11. Make Cookie Dough Buttercream: In a stand mixer fitted with paddle attachment, cream room temperature butter and brown sugar until light and fluffy. Gradually add sifted confectioners sugar and heat-treated flour, about 1/2 cup at a time on low speed. Increase speed to medium and beat for 1 minute.
  12. Finish Buttercream: Add vanilla and salt, mixing to combine. Add heavy cream 1 tablespoon at a time until creamy, fluffy, and piping consistency is achieved.
  13. Assemble Sandwiches: Pipe a swirl of cookie dough buttercream onto the flat side of one cookie. Top with another cookie’s flat side and gently press together. Optionally sprinkle flaky sea salt on top.
  14. Set and Serve: Refrigerate sandwiches to set if desired. Serve chilled or at room temperature for best flavor and texture.

Notes

  • Heat treating the flour is essential for safety when used raw in buttercream.
  • Store cookies in an airtight container at room temperature for up to 3 days.
  • To freeze, first chill cookies uncovered on a baking sheet until firm (about 1 hour). Wrap assembled sandwiches tightly in plastic and place in freezer bags. Freeze up to 2 months.
  • Bread flour can be substituted with all-purpose flour if unavailable.
  • Use a kitchen scale for precise cookie dough portioning to ensure even baking.

Nutrition

  • Serving Size: 1 cookie sandwich
  • Calories: 320 kcal
  • Sugar: 30 g
  • Sodium: 150 mg
  • Fat: 18 g
  • Saturated Fat: 10 g
  • Unsaturated Fat: 6 g
  • Trans Fat: 0 g
  • Carbohydrates: 40 g
  • Fiber: 3 g
  • Protein: 3 g
  • Cholesterol: 55 mg

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