Name: Brownie Cookie Sandwiches with Peanut Butter Frosting
Prep time: 15 min
Cook time: 10 min
Total time: 25 min
Cuisine: American
Ingredients: 1 cup all-purpose flour; 0.5 cup unsweetened cocoa powder; 0.5 teaspoon baking soda; 0.25 teaspoon salt; 0.5 cup unsalted butter, softened; 0.5 cup brown sugar; 0.25 cup granulated sugar 2 large eggs 1 teaspoon vanilla extract; 0.5 cup creamy peanut butter 1 cup powdered sugar 2 tablespoons heavy cream

Soft, fudgy, and unapologetically rich, these brownie cookie sandwiches are the ultimate indulgence for chocolate and peanut butter lovers alike. Imagine a chewy brownie cookie with crisp edges and a gooey center, hugged around a cloud of silky peanut butter frosting. It’s the kind of treat that turns a regular day into something worth celebrating.

These sandwiches bring together two of the most adored desserts into one bite-sized powerhouse. The deep cocoa flavor in the cookie pairs perfectly with the sweet and nutty filling, creating a flavor harmony that satisfies cravings with every bite. Whether you serve them at a gathering, pack them for a picnic, or stash them in the fridge for a late-night treat, they’re bound to steal the show.

These are no ordinary cookies. They’re chewy like a brownie, soft like a fresh cookie, and filled like your dream cupcake. The frosting is whipped to a dreamy texture that spreads like butter and melts on your tongue. They’re make-ahead friendly, freezer-friendly, and honestly, even freezer-tasting friendly (yes, I’ve eaten one straight from the freezer and loved it). Whether you’re a peanut butter fiend or chocolate obsessive, this dessert has your name on it.

What Kind of Cocoa Powder Should I Use?

For that deep, intense brownie flavor, unsweetened Dutch-processed cocoa powder is your best bet. It gives the cookies that rich, almost truffle-like darkness. If you only have natural cocoa powder on hand, that will work too—just note the flavor might lean more toward a classic hot chocolate vibe. Either way, make sure your cocoa is fresh for the deepest flavor hit.

This recipe comes together with pantry staples but tastes like a bakery masterpiece. Each ingredient plays a role in building that unforgettable texture and flavor.

All-purpose flour brings structure and binds all the brownie goodness together without making the cookies cakey.

Unsweetened cocoa powder delivers the rich chocolate backbone that makes these cookies taste like brownies.

Baking soda helps lift the cookies just enough so they’re not dense, but still chewy.

Salt is essential to balance the sweetness and make the chocolate flavor shine.

Unsalted butter gives the cookies richness and the frosting its velvety body.

Brown sugar adds a deep molasses sweetness and helps keep the cookies moist.

Granulated sugar gives crisp edges and balances the brown sugar.

Eggs act as binders and help create that chewy, brownie-like interior.

Vanilla extract adds warmth and rounds out the chocolate and peanut butter flavors.

Creamy peanut butter is the star of the frosting, offering nuttiness and body.

Powdered sugar makes the frosting sweet and fluffy.

Heavy cream softens the frosting and gives it that silky, whipped texture.

Brownie Cookie Sandwiches with Peanut Butter Frosting 2

In a large mixing bowl, whisk together the flour, cocoa powder, baking soda, and salt. In another bowl, beat together softened butter, brown sugar, and granulated sugar until light and fluffy. Add eggs and vanilla extract, beating well. Slowly mix in the dry ingredients until a thick dough forms.

Step 2: Scoop and Bake

Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper. Scoop tablespoon-sized rounds of dough onto the sheet, spacing them a couple inches apart. Bake for 8–10 minutes or until the edges are set but the centers look slightly underbaked. Let cool on the tray before transferring to a rack.

Step 3: Make the Peanut Butter Frosting

In a mixing bowl, beat together peanut butter and softened butter until smooth. Add powdered sugar in batches, then pour in heavy cream and beat until light, fluffy, and spreadable. Adjust consistency with more cream or powdered sugar as needed.

Step 4: Assemble the Sandwiches

Pair up cookies of similar size. Spread or pipe a generous amount of frosting onto the flat side of one cookie, then gently press a second cookie on top. Repeat until all cookies are sandwiched.

These cookie sandwiches are perfect straight from the fridge for a firmer bite or served at room temperature for a softer, melt-in-your-mouth experience. They make a standout addition to dessert platters and are just as fitting for casual snacking as they are for special occasions.

This recipe makes about 12 cookie sandwiches, enough for a small gathering or to portion out over a few days. Store them in an airtight container in the fridge for up to a week or freeze individually wrapped sandwiches for up to a month. Just let them thaw slightly before biting in—unless you’re into the ice cream sandwich vibe (which we totally support).

A Glass of Cold Milk

Nothing complements chocolate and peanut butter like a tall glass of icy milk. It’s nostalgic and perfect.

Fresh Berries

The tartness of strawberries or raspberries balances out the rich sweetness of these cookies beautifully.

Salted Pretzels

Crunchy, salty pretzels are a fun and contrasting pairing to the soft, sweet cookies.

Coffee or Espresso

If you’re serving these after dinner, a shot of espresso or strong coffee cuts through the richness.

Vanilla Bean Ice Cream

Take these to the next level by turning them into frozen treats with a scoop of ice cream.

Chocolate Dipped Fruit

Dip bananas or strawberries in chocolate and serve alongside for a chocolate-on-chocolate moment.

Peanut Butter Hot Chocolate

If you’re doubling down on indulgence, peanut butter hot chocolate is a dreamy partner.

If you love these brownie cookie sandwiches, you might also enjoy these cookie mash-ups from Luna Meals:

Peanut Butter Cornflake Cookies for no-bake crunch.
Salted Caramel Pecan Cookies for deeper nutty flavor.

Lemon Churro Cookies if you crave brightness and spice.
Dr. Pepper Brownies for a fizzy, unexpected twist.
Small Batch Pistachio Cream Cinnamon Rolls for nutty, gooey indulgence.

Save This Recipe For Later

📌 Save this recipe to your Pinterest dessert board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you go for crunchy or creamy peanut butter? Add a sprinkle of sea salt? I’d love to hear your spin on it.

Explore beautifully curated health-boosting drinks on Luna Meals on Pinterest and discover your new go-to for feeling great!

Conclusion

Brownie Cookie Sandwiches with Peanut Butter Frosting are what dessert dreams are made of. They’re easy to make, packed with nostalgic flavors, and designed to impress. Whether you’re sharing them or stashing them all for yourself, they’re bound to become a repeat favorite in your kitchen. Try them once, and they just might earn a permanent spot in your cookie jar.

Brownie Cookie Sandwiches with Peanut Butter Frosting