Cosmic Brownie Bites are fudgy mini brownies made with brownie mix, filled with rich chocolate ganache, and topped with colorful candy-coated chocolate chips for a fun bite-sized twist on the classic Cosmic Brownie.

Brownie lovers won’t want to stop at just one flavor—check out my other brownie bite recipes like Almond Joy Brownie Bites, Reese’s Brownie Bites, Snickers Brownie Bites, S’mores Brownie Bites, and Texas Sheet Cake Bites for even more bite-sized dessert inspiration!

Why you’ll love this recipe:

If you grew up loving Cosmic Brownies, these Cosmic Brownie Bites are about to become your new favorite treat. They have everything you love about the classic snack cake—a rich fudgy brownie, a smooth layer of chocolate, and those signature rainbow candy-coated chips—but in a fun, bite-sized form.

The best part? They’re incredibly easy to make thanks to a store-bought brownie mix. No measuring out a dozen ingredients or making brownie batter from scratch. Just mix, bake, fill, and decorate. It’s the kind of shortcut that makes homemade desserts feel completely doable, even on busy days!

Ingredients you’ll need:

Brownie mix- batter prepared according to box instructions
Semi-sweet chocolate chips
Heavy whipping cream
Rainbow candy coated chips

These brownie bites start with a soft and fudgy brownie base baked in a mini muffin pan. Once they’ve cooled, the centers are filled with silky chocolate ganache that adds an extra layer of rich chocolate flavor. A sprinkle of rainbow candy-coated chips on top gives them that unmistakable Cosmic Brownie look that instantly brings back childhood memories.

What makes these Cosmic Brownie Bites so fun is that they feel familiar while still being a little different. They’re inspired by the original Cosmic Brownies, but the bite-sized shape makes them perfect for parties, holidays, bake sales, or simply grabbing whenever you’re craving something sweet. There’s just something about miniature desserts that makes them impossible to resist.

And let’s talk about the flavor. These brownie bites are intensely chocolatey in the best way possible. The brownie itself is soft, chewy, and fudgy, while the ganache filling creates a creamy center that practically melts in your mouth. The candy-coated chips add a little crunch and sweetness that balances everything perfectly. Every bite tastes like a more decadent version of the classic treat.

How to make the best Cosmic Brownie Bites:

Preheat your oven to 350 degrees F and grease a 24-cup mini muffin tin with non-stick cooking spray.
Prepare your brownie batter following the directions on the box, then evenly divide the batter among each greased mini muffin tin cup.
Bake for 18-20 minutes, then immediately take the handle of a spatula or tart tamper and press down in the center of each brownie bite to create a well. Set aside to cool.
Place the chocolate chips in a microwave-safe bowl. Pour the heavy cream over the chocolate chips and microwave for 45 seconds. Let sit for 1 minute, then whisk until smooth.
Transfer the ganache into a piping bag or ziploc bag, cut off one end, and generously fill each brownie bite.
Sprinkle each one with candy coated chips while the ganache is still wet. Let the ganache set, then enjoy!

One of the reasons I love making these brownie bites is how approachable they are. Using a brownie mix keeps the recipe simple and reliable, which means you can spend less time in the kitchen and more time enjoying the finished dessert. They’re also easy enough for beginner bakers but impressive enough to bring to a gathering.

These Cosmic Brownie Bites are also a great make-ahead dessert. They stay rich and fudgy, and the flavors seem to get even better after they’ve had a little time to sit. Whether you’re making them for a birthday party, a family movie night, or just because you’re craving chocolate, they’re always a hit.

If you’re looking for an easy brownie bites recipe that combines nostalgia, rich chocolate flavor, and a fun presentation, these Cosmic Brownie Bites are it. They’re simple to make, impossible to stop eating, and guaranteed to disappear fast whenever they’re served.

Once you make them, don’t be surprised if they become your go-to dessert whenever a chocolate craving strikes!

My top tips:

BROWNIE MIX: You already know I had to throw a shortcut in here somewhere so we’re using a boxed brownie mix to make this recipe even easier! If you’d still like to make yours from scratch, just be sure you use a recipe that traditionally fits a 9×9 pan.
GREASE YOUR PAN: Make sure you grease your mini muffin tin generously with non-stick cooking spray before adding the brownie batter. It’s no fun to make a dessert just for it to get stuck in the pan!
CREATING THE WELLS: You’ll want to press down the centers of each brownie bite while the brownies are still warm from the oven. I just used the rounded end of a spatula handle I had, but if you own a tart tamper, that would be even more efficient.
COOLING: It’s important to let the brownies cool completely before filling them with ganache. If you fill warm brownies, they will likely absorb the filling and become soggy.
GANACHE: You want to avoid boiling the heavy cream for ganache because overheating can scorch the cream and cause the ganache to split/seperate. Simply make sure it is hot enough to melt the chocolate, then let your stirring do the rest of the work!
PIPING BAG: Transferring the ganache into a piping bag helps control how much filling you’re piping into the brownie bites and in turn, keeps them nice and neat. You can also use a Ziploc bag here.
DECORATING: You can find candy coated chips on Amazon, but if you don’t want a huge container of them, a budget friendly hack is to buy a box of Pillsbury funfetti brownies at the grocery store and use the sprinkle packet that’s included.
REMOVING FROM THE PAN: I don’t recommend removing these Cosmic Brownie Bites from the muffin tin until they are fully cooled. If the edges of the brownies seem to be stuck to the pan, run a butter knife around the edges to loosen each one.
STORING: Transfer any leftover brownie bites into an airtight container and store at room temperature for up to 5 days or in the fridge for up to a week!

Looking for more brownie recipes? Check these out!

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