Cosmic Brownie Rice Krispie Treats
These Cosmic Brownie Rice Krispie treats combine two childhood favorites into one super fun dessert. Chocolate Rice Krispie treats are layered with Cosmic Brownie pieces, covered in melted chocolate, and finished with rainbow chip candies for the ultimate nostalgic no-bake treat. If you believe there’s no such thing as too much chocolate, this recipe was made for you.
Cosmic Brownie Rice Krispie Treats
Prepare to go to ludicrous snack speed with these Cosmic Brownie Rice Krispie Treats.
Rich chocolate rice krispie treats are layered with chunks of cosmic brownies, topped with a smooth chocolate coating, and finished with colorful rainbow chip candies for a dessert that goes completely over the top.
They’re nostalgic, chocolatey, and packed with enough sweetness to launch you into another galaxy.
Prepare for a chocolate experience of cosmic proportions and may the Schwartz be with you.
If these treats launched your sweet tooth into another galaxy, check out my homemade cosmic brownies, frosted chocolate brownies, and cosmic brownie cookies.
Why You Will Love This Recipe
- Chocolate lover’s dream: Chocolate rice krispie treats, cosmic brownies, a rich chocolate coating, and rainbow chip candies make every bite packed with chocolate flavor.
- Easy no-bake dessert: No oven required! Just a few simple steps and minimal prep time.
- Pure nostalgic fun: Inspired by the classic lunchbox dessert, these treats bring all the childhood dessert vibes in an extra over-the-top form.
- Loaded with texture: Soft, gooey, chewy, and topped with a smooth chocolate finish and crunchy rainbow chips.
- Perfect for parties and sharing: These colorful bars are guaranteed to stand out on a dessert table and disappear fast.
Recipe Ingredients
- Unsalted butter
- Mini marshmallows
- Semisweet chocolate chips
- Vanilla extract
- Salt
- Chocolate crispy rice cereal – Cocoa Rice Krispies cereal or your favorite brand.
- Cosmic brownies – Cut into small pieces.
- Coconut oil – Substitute with shortening.
- Rainbow chip candies – Find rainbow chips on Amazon or substitute with mini M&Ms.
How to Make Cosmic Brownie Rice Krispie Treats
Melt and stir the butter and mini marshmallows until completely smooth. Add the chocolate chips, vanilla, and salt and stir until combined.
Stir in the chocolate crispy rice cereal and additional mini marshmallows.
Pour half of the mixture into the prepared pan and spread into an even layer.
Sprinkle the cosmic brownie pieces evenly over the rice krispie treat layer.
Spread the remaining rice krispie treat mixture over the top and gently press into an even layer.
Spread the melted chocolate over the bars, then top with extra cosmic brownie pieces and rainbow chip candies.
Courtney’s Recipe Tips for Success
- Line the baking pan with parchment paper extending up the sides for easy removal after the bars have set.
- Gently press the rice krispie treat mixture into the pan, being careful not to compact it too firmly or the bars may turn out dense and hard.
- For easier spreading and less sticking, lightly dampen your hands with water before pressing the mixture into an even layer.
- Sprinkle on the rainbow chip candies while the chocolate is still wet. This helps them stick and creates that classic cosmic brownie look.
- Use a serrated knife for cleaner cuts. A gentle sawing motion works best, and wiping the blade between cuts keeps the edges crisp.
- For picture-perfect bars, chill briefly before slicing. About 10–15 minutes helps the chocolate firm up without making the treats hard.
Frequently Asked Questions
Yes, but the bars will have a very slightly lighter chocolate flavor. Chocolate Rice Krispies just add an extra layer of chocolate in this recipe.
Absolutely. Milk chocolate creates a sweeter finish, semi-sweet balances the sweetness, and dark chocolate adds a richer flavor.
You can, but Cosmic Brownies give these bars their signature nostalgic flavor and colorful look. Plus, using store-bought brownies keeps this recipe completely no-bake.
I purchased the rainbow chip candies from Amazon, but they may also be available in the baking aisle at your grocery store. If you can’t find them, substitute mini M&Ms for a similar colorful finish.
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Cosmic Brownie Rice Krispie Treats
Equipment
Ingredients
Cosmic Brownie Rice Krispie Treats
- ½ cup (114 g) unsalted butter
- 20 oz (567 g) mini marshmallows
- ½ cup (90 g) semisweet chocolate chips
- 2 tsp (2 tsp) vanilla extract
- ½ tsp (½ tsp) salt
- 7 cups (196 g) cocoa Rice Krispies cereal
- 2 cups (100 g) mini marshmallows
- 6 (6) Cosmic Brownies (cut into small pieces)
Additional Ingredients
- 1 ½ cups (270 g) semisweet chocolate chips
- 1 tbsp (14 g) coconut oil (substitute with shortening)
- ¼ cup (60 g) rainbow chip candies (find on Amazon or substitute with mini M&M candies)
- 3 (3) Cosmic Brownies (cut into small pieces)
Instructions
- Prepare a 9×13 baking pan with nonstick cooking spray and parchment paper. Extend the parchment paper up the sides of the pan to easily remove the rice krispie treats from the pan.
- In a large saucepan on the stovetop over medium-low heat, melt the unsalted butter. Add in 20 ounces of mini marshmallows and stir until the marshmallow mixture is melted and smooth. Remove the saucepan from the heat. Stir in the semisweet chocolate chips, vanilla extract, and salt. Then, fold in the cocoa Rice Krispies cereal and additional mini marshmallows.
- Spread half of the rice krispie treat mixture into the prepared baking pan. Moisten your hands with water, and gently press the mixture into the pan creating an even layer.
- Sprinkle the cosmic brownie pieces over the rice krispie treat mixture in an even layer. Then, spread the remaining rice krispie treat mixture evenly over the brownies. Lightly moisten your hands with water, then gently press the mixture into the pan to create an even layer.
- In a heat-safe bowl, combine the semisweet chocolate chips and coconut oil. Microwave in 30-second intervals, stirring between each, until smooth and fully melted. Pour the chocolate over the rice krispie treats and use an offset spatula to spread it into an even layer.
- Sprinkle the rainbow chip candies over the melted chocolate, then finish with the additional cosmic brownie pieces, gently pressing them into the top.
- Allow the rice krispie treats to set in the pan for 1 hour before removing and slicing into squares. For cleaner cuts, chill the bars for 30 minutes to help the chocolate layer firm up.
Notes
- Room temperature: Store the rice krispie treats in an airtight container or resealable storage bag at room temperature for 2 to 3 days.
- Refrigerator/Freezer: I do not recommend storing rice krispie treats in the refrigerator or freezer, as it can affect their soft and chewy texture. However, you can briefly chill the bars before cutting to help them firm up and make slicing easier.
Nutrition
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About Courtney
Baker | 80s Lover | Cookbook Author
Courtney is a self-taught home baker and cookbook author of “Girls Just Wanna Bake Cupcakes”. She loves to create new and unique recipes while simultaneously listening to 80s music.
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