Brownie Cookie Sandwiches with Peanut Butter Frosting

Save this recipe on:

Thick, fudgy brownie cookies meet a dreamy swirl of peanut butter frosting in this ultra-indulgent treat. These brownie cookie sandwiches are everything you want in a dessert: chewy on the outside, creamy in the middle, and bursting with rich chocolate and peanut flavor in every bite.

Perfect for bake sales, birthdays, or an afternoon pick-me-up, these cookie sandwiches are a grown-up twist on the nostalgic chocolate and peanut butter combo. They store beautifully and look gorgeous on a dessert tray—but fair warning: they disappear fast!

---

What Kind of Brownie Cookies Work Best?

For these sandwiches, you want a chewy, slightly crisp brownie cookie that holds its shape well. The best ones have a shiny crackled top (like classic brownies) and rich cocoa flavor. Avoid cakey brownie cookies, as they can make the sandwich too soft and crumbly.

If you’re short on time, a boxed brownie mix can be adapted into cookies—just use less liquid and add a touch more flour. But if you’re going all in from scratch, a good amount of melted chocolate and a few eggs will give you that signature texture.

---

Ingredients for the Brownie Cookie Sandwiches with Peanut Butter Frosting

Brownie Cookie Ingredients:

• Unsweetened cocoa powder – Deepens the chocolate base and brings that rich brownie flavor.
• Dark chocolate chips or chunks – Melted into the batter, this is what gives the cookies their fudgy chew.
• Eggs – Vital for structure and achieving that crackled top.
• Granulated sugar – Sweetens and helps with that classic brownie crust.
• Butter – Adds richness and helps the cookies stay soft inside.
• Vanilla extract – Boosts all the chocolate notes.
• All-purpose flour – Just enough to bind everything without making the cookies dry.
• Salt – Enhances the chocolate and balances the sweetness.

Peanut Butter Frosting Ingredients:

• Creamy peanut butter – The star of the show; pick a good-quality one.
• Butter – Helps whip everything into a smooth, pipeable frosting.
• Powdered sugar – For sweetness and stability.
• Heavy cream or milk – Just a splash to get the perfect texture.
• Vanilla extract – A subtle background note that makes a difference.

---

How To Make the Brownie Cookie Sandwiches with Peanut Butter Frosting

Step 1: Prep and Melt the Chocolate

Start by preheating your oven to 350°F (175°C) and lining two baking sheets with parchment paper. Melt your dark chocolate and butter together, either in a double boiler or in short intervals in the microwave. Let it cool slightly while you prepare the rest.

Step 2: Make the Cookie Batter

In a large bowl, whisk together the eggs, sugar, and vanilla until light and frothy. This adds air, giving the cookies their crackly tops. Slowly pour in the melted chocolate mixture and stir until combined. Sift in cocoa powder, flour, and salt. Mix until a thick, brownie-like batter forms.

Step 3: Scoop and Bake

Using a cookie scoop or tablespoon, drop the batter onto the prepared baking sheets, spacing them 2 inches apart. Slightly flatten each mound for an even shape. Bake for 10-12 minutes or until the tops are shiny and crackled. They should be soft in the middle but set around the edges. Let them cool completely on a wire rack.

Step 4: Whip the Peanut Butter Frosting

While the cookies cool, beat together peanut butter and softened butter until smooth and creamy. Add powdered sugar and beat until fluffy, drizzling in milk or cream a little at a time until the consistency is right. Stir in the vanilla last.

Step 5: Assemble the Sandwiches

Pair up your cooled cookies by size. Pipe or spread a generous amount of frosting onto the flat side of one cookie, then gently press another on top to make a sandwich. Repeat until all cookies are paired.

---

How to Serve and Store These Cookie Sandwiches

Serve these brownie cookie sandwiches at room temperature to let the frosting soften slightly for the best texture. They make a beautiful addition to cookie platters, holiday trays, or as the perfect after-dinner indulgence with coffee.

To store, place the sandwiches in a single layer in an airtight container. Keep them in the fridge for up to 5 days or freeze for longer storage. Just allow them to come to room temp before serving for the best flavor and softness.

---

What to Serve With Brownie Cookie Sandwiches with Peanut Butter Frosting?

A tall glass of cold milk

Classic and unbeatable—especially for kids or the kid-at-heart.

Coffee or espresso

The bitter notes of coffee balance the sweet richness of the sandwich perfectly.

Salted caramel drizzle

Drizzle warm salted caramel over the top for an extra gooey upgrade.

Vanilla ice cream

Serve one sandwich slightly warm with a scoop of vanilla ice cream for a next-level dessert.

Fresh berries

Strawberries or raspberries add a tangy contrast to the rich chocolate and peanut butter.

Chocolate ganache dip

Turn dessert into a fun experience by serving the sandwiches with a pot of melted ganache.

Whipped cream

A dollop of freshly whipped cream on the side never hurts.

Toasted pecans

For added crunch and a nutty finish, sprinkle crushed toasted pecans around the plate.

---

Want More Cookie Ideas with a Twist?

If you’re loving these brownie cookie sandwiches, don’t miss out on more creative cookie takes:

• Try the nostalgic charm of Jimmy Carter’s Grandmother’s Peanut Butter Cookies for a Southern classic.
• These Salted Caramel Cupcakes aren’t cookies, but their rich, gooey flavor profile would please any sweet tooth.
• Go fruity with Chocolate Cherry Cream Pie — a great pairing if you’re building a dessert board.
• Don’t forget to bookmark the soft and chewy Soft Peanut Butter Cookies for a simple treat.
• Need more color? The Strawberry Cream Cheese Crumble Cookies bring sweetness with a bright berry twist.

---

Save This Pin For Later

Save this delicious idea to your favorite Pinterest board so it’s easy to find when you’re ready to whip it up again.

Tried it with a twist? Maybe a splash of bourbon or a drizzle of glaze? I’d love to hear how it turned out—drop your tips or questions in the comments below.

Need more inspiration? Explore my daily kitchen creations on SavorQueen Recipes on Pinterest. Your next favorite might be waiting there.

---

Print

Save this recipe on: