Cosmic Brownie Cookies: A Nostalgic Fudgy Dream in Every Bite

The Cookie That Tastes Like Childhood

If you ever tore into a pack of Little Debbie Cosmic Brownies after school, you already know the magic. Now imagine that same rich chocolatey goodness—but in cookie form. That’s exactly what Cosmic Brownie Cookies deliver: thick, chewy chocolate cookies topped with a silky ganache and finished with rainbow candy chips for a pop of color and childhood nostalgia. They’re fun, bold, and downright delicious.

What Makes These Cookies So Special?

These cookies aren’t just brownies disguised as cookies. They’re the perfect hybrid. The base is intensely chocolatey and super soft, kind of like a dense fudge brownie that spread into a cookie shape. Once baked, they’re topped with glossy ganache—warm, smooth, and rich. And those rainbow chips? Not just a cute touch—they give a satisfying little crunch with every bite and bring that signature “cosmic” vibe we know and love.

Ingredients

For the Cookies:

• 1 cup unsalted butter, softened
• 1 cup brown sugar
• ½ cup granulated sugar
• 2 large eggs
• 2 tsp vanilla extract
• 1 ½ cups all-purpose flour
• ¾ cup Dutch-process cocoa powder
• 1 tsp baking soda
• ½ tsp salt

For the Ganache:

• 1 cup semi-sweet chocolate chips
• ½ cup heavy cream

Topping:

• Rainbow candy-coated chips (or mini M&Ms)

How to Make Cosmic Brownie Cookies

Step 1: Mix the Dough

In a large bowl, cream the butter, brown sugar, and granulated sugar until smooth and fluffy. Beat in the eggs one at a time, followed by the vanilla.

Step 2: Add Dry Ingredients

In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt. Slowly mix into the wet ingredients until a soft dough forms.

Step 3: Chill, Then Bake

Scoop the dough into large balls (about ¼ cup each) and chill in the fridge for at least 30 minutes. Bake at 350°F (175°C) for 10–12 minutes. Let cool on the tray before topping.

Step 4: Make the Ganache

Heat the heavy cream in a small saucepan or microwave until just steaming. Pour over the chocolate chips and let sit for 2 minutes, then stir until glossy.

Step 5: Decorate

Spoon a layer of ganache on each cooled cookie and top immediately with rainbow chips. Let them set at room temp or in the fridge for a firmer topping.

Tips for That Perfect Cosmic Finish

• Chill the dough so the cookies don’t spread too thin in the oven.
• Use Dutch-process cocoa for the deepest, richest chocolate flavor.
• Let cookies cool before adding ganache or it will melt right off.
• Store in the fridge if you prefer a dense, candy bar–like texture.

Final Thoughts

Cosmic Brownie Cookies aren’t just a fun twist on a classic snack—they’re the ultimate treat for chocolate lovers, nostalgic snackers, and cookie enthusiasts alike. Whether you’re making them for a party, bake sale, or just because you deserve something sweet, these cookies always hit the spot.

Stick around—every visit tastes better than the last at The Buttered Bliss.