Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

If you adore brownies and cookies separately, wait ‘til you try my Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe. Imagine biting into soft, fudgy brownie cookies sandwiching the creamiest, dreamy cookie dough buttercream you’ve ever tasted. Seriously, this dessert will rock your world — and once you try it, you’ll want to make it again and again. Stick with me, and I’ll walk you through every step to nail these perfect little treats at home.

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Ingredients & Why They Work

This recipe blends ingredients that harmonize beautifully together. The combination of all-purpose and bread flour in the brownie cookies contributes to an ideal chew, while the cocoa powder provides rich chocolate depth. The cookie dough buttercream uses heat-treated flour to capture that nostalgic raw dough taste safely, and brown sugar adds extra richness and moisture to the frosting.

• Unsalted Butter: Use good quality butter for both cookies and buttercream; it amps up flavor and texture.
• Bittersweet Chocolate Chips: This brings a perfect balance of sweetness and complexity; feel free to use chopped chocolate for a more rustic feel.
• Granulated and Light Brown Sugar: Brown sugar’s molasses content adds moisture and chewiness, while granulated sugar ensures crisp edges on the cookies.
• Eggs: Make sure they’re at room temperature to emulsify better, resulting in a smoother batter.
• Vanilla Extract: Don’t skimp here; vanilla enhances all the other flavors beautifully.
• All-Purpose Flour & Bread Flour: Bread flour adds extra chew to the brownie cookie, so if you skip it, just add a bit more all-purpose flour.
• Dutch Process Cocoa Powder: This cocoa develops a deep, mellow chocolate flavor without the bitterness.
• Baking Powder, Baking Soda, and Salt: The right leavening and seasoning are crucial for that perfect rise and flavor balance.
• Confectioners Sugar: For the smoothest, fluffiest buttercream texture.
• All-Purpose Flour (for buttercream): Heat-treated to safely recreate that cookie dough taste without any raw flour worries.
• Heavy Cream: Added gradually for luscious texture without thinning the buttercream too much.
• Brown Sugar (for buttercream): Gives the buttercream a lovely caramel note and subtle chewiness.

Tweak to Your Taste

One of my favorite things about this Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe is how flexible it is — you can totally make it your own! Over the years, I’ve played around with flavor add-ins and adjustments to suit personal preferences or dietary needs.

• Chocolate Variations: Sometimes I swap bittersweet chocolate for milk chocolate chips for a sweeter, creamier cookie; the texture changes slightly but still delish.
• Nut Allergies: I like to toast and finely chop nuts in the buttercream on occasion, but if you’re nut-allergic, just skip them — it’s still incredible as is.
• Salted Butter Option: Using salted butter in the buttercream ups the contrast between sweet and salty, which I love; just reduce extra salt slightly.
• Gluten-Free Twist: I’ve substituted gluten-free flour blends in the buttercream with success, but be mindful it might alter texture a teeny bit.

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

Step 1: Heat Treat Your Flour for Safety

This step is key if you want that raw cookie dough flavor in your buttercream without any health worries. Spread your flour out evenly on a baking sheet and bake at 300°F. Keep a close eye and stir every couple of minutes to avoid flour burning. I usually use a kitchen thermometer and pull it once it hits 165°F. Then, let it cool completely before moving on. Trust me, this extra step is worth it!

Step 2: Make the Brownie Cookies

Melt your butter and bittersweet chocolate over a double boiler—this takes just minutes, so don’t wander off. Once smooth, let it cool slightly so you don’t scramble the eggs when mixing. While that cools, whisk together your flours, cocoa powder, baking powder, soda, and salt in a bowl. Then, in your mixer, combine the chocolate mixture with eggs, sugars, and vanilla until blended. Add your dry ingredients slowly and mix until just combined — don’t overdo it or your cookies might turn cakey.

Cover the dough and chill for 30 minutes. I promise this small patience yields cookies with better structure and fudgier centers.

Step 3: Bake and Shape Those Cookies

Preheat to 350°F and line your pans with parchment. Use a small cookie scoop or kitchen scale for uniform cookies. I find that weighing dough balls around 0.07–0.08 ounces gives me perfectly sized sandwich cookies. Space them a couple inches apart because they spread a touch.

Bake for 8-10 minutes until edges set but centers still puff and crack slightly — this means fudgy perfection. Here’s a tip: While still warm, I like to gently nudge the edges of each cookie inward using the back of a fork or swirl a round cutter around them to get neat round sandwiches. Let them cool on the sheet before moving to a rack to cool completely.

Step 4: Make the Cookie Dough Buttercream

Cream your softened butter and brown sugar until light and fluffy — patience here really pays off for that silky texture. Gradually add in your sifted confectioners sugar and heat-treated flour, beating on low for smooth incorporation. Then crank the mixer to medium for a minute to get that fluffy body. Add vanilla, salt, and finally your heavy cream, spooning it in one tablespoon at a time until you hit that perfect pipe-able but sturdy consistency.

Step 5: Assemble Your Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

Pipe or spread a generous swirl of the buttercream on the flat underside of one cookie, then gently press another cookie on top to create a sandwich. If you want that extra special touch, sprinkle with flaky sea salt for a delicious salty-sweet boost. Then, refrigerate the sandwiches for a bit if you want the buttercream to firm up, or serve at room temperature and enjoy those melty, dreamy bites.

How to Serve Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe

Garnishes

I adore adding just a pinch of flaky sea salt on top — it makes all the richness pop and adds a delightful crunch. Sometimes I sprinkle tiny chocolate chips or edible glitter on the buttercream for festive occasions, which my family always cheers for.

Side Dishes

These sandwiches pair wonderfully with a chilled glass of milk or a robust espresso to cut through the sweetness. For parties, I like to include simple fruit platters with berries and sliced apples — their freshness balances richness perfectly.

Creative Ways to Present

I’ve found assembling these sandwiches on rustic wooden boards with a scattering of edible flowers creates an irresistible display for gatherings. Layered in pretty boxes wrapped with twine, they also make charming homemade gifts that are sure to wow.

Make Ahead and Storage

Storing Leftovers

I store leftover brownie cookie sandwiches in an airtight container in the fridge for up to 3 days. They maintain their texture and flavor beautifully, but if you want that just-baked softness, let them sit at room temp for 30 minutes before eating.

Freezing

Freeze the cookies a bit first on a baking sheet uncovered, then wrap each sandwich tightly in plastic wrap and stash in a freezer bag. They freeze well for up to 2 months — perfect for prepping ahead for celebrations or cravings.

Reheating

To reheat after freezing, I gently unwrap and microwave each sandwich for about 10-15 seconds. This refreshes the fudgy cookie and softens the buttercream just right without melting it completely.

FAQs

Final Thoughts

Honestly, this Brownie Cookie Sandwiches with Cookie Dough Buttercream Recipe is one of those baked goods I keep coming back to when I want to wow family or friends. The combination of soft brownie cookies with that luscious, safe-to-eat cookie dough buttercream is just magic on a plate. I’m confident you’ll love making and sharing these as much as I do — they’re the perfect treat to brighten any day or special occasion. So go on, bake a batch, and prepare yourself for some satisfied smiles!

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