These Cosmic Brownie Cookies capture the indulgent magic of classic Cosmic Brownies, blending fudgy chocolate dough with a chewy cookie texture, crowned with vibrant rainbow sprinkles. These Fudgy Cosmic Treats are a delightful fusion of brownie richness and cookie chew, perfect for kids, adults, and any occasion craving a chocolatey burst of fun.
Why You’ll Love Cosmic Brownie Cookies
This Cosmic Brownie Cookies recipe is a standout Fudgy Cosmic Treats:
- Rich Chocolate: Deep, brownie-like flavor in every bite.
- Playful Look: Rainbow sprinkles add a cosmic pop of color.
- Simple to Bake: Easy steps for quick, delicious results.
- Chewy Delight: Soft, gooey texture everyone adores.
- I baked these for a birthday party, and they were the ultimate Fudgy Cosmic Treats hit!
Ingredients for Cosmic Brownie Cookies
Here’s what you’ll need for Cosmic Brownie Cookies (makes ~24 cookies):
- For the Cookies:
- 1 cup (2 sticks) unsalted butter, softened
- 1½ cups brown sugar, packed
- 2 large eggs
- 1 tsp vanilla extract
- 1½ cups all-purpose flour
- ¾ cup unsweetened cocoa powder (Dutch-process preferred)
- 1 tsp baking soda
- ½ tsp salt
- 1½ cups semi-sweet chocolate chips
- ½ cup mini rainbow sprinkles (for topping)
Ingredient Tips:
- Butter: Softened for smooth creaming; unsalted for flavor control.
- Cocoa Powder: Dutch-process for richer taste; sift to avoid lumps.
- Sprinkles: Mini size for even topping; avoid nonpareils that bleed color.
- Chocolate Chips: Semi-sweet for balance; use dark for extra intensity.
- Equipment: Mixer, baking sheets, parchment paper, cookie scoop, wire rack.
Directions for Cosmic Brownie Cookies
Let’s bake these stellar Cosmic Brownie Cookies!
Preheat Oven
I preheat the oven to 350°F (175°C) and line two baking sheets with parchment paper to prevent sticking and ensure easy cleanup for these Cosmic Brownie Cookies.
Prepare Dough
In a large bowl, I cream 1 cup softened butter and 1½ cups brown sugar with a mixer for 2–3 minutes until light and fluffy. I add 2 eggs one at a time, mixing well, then stir in 1 tsp vanilla extract.
Mix Dry Ingredients
In a separate bowl, I sift 1½ cups flour, ¾ cup cocoa powder, 1 tsp baking soda, and ½ tsp salt. I gradually add the dry ingredients to the wet mixture, mixing until just combined to keep the Cosmic Brownie Cookies tender.
Add Chocolate Chips
I fold in 1½ cups semi-sweet chocolate chips for gooey pockets of chocolate. If the dough feels soft, I chill it for 30 minutes for thicker cookies.
Shape and Top
Using a cookie scoop, I drop heaping tablespoons of dough onto the baking sheets, spacing 2 inches apart. I gently press a pinch of mini rainbow sprinkles onto each cookie for that cosmic flair.
Bake and Cool
I bake for 10–12 minutes until edges are set and centers are soft. I cool the Cosmic Brownie Cookies on the sheets for 5 minutes, then transfer to a wire rack to cool completely.
Nutrition
- Prep Time: 10 minutes
- Cook Time: 15 minutes per batch
- Chill Time: 15 minutes (optional)
- Total Time: ~40 minutes
- Servings: ~18 cookies
- Calories: ~200 kcal per cookie
- Macros per Serving: 26g carbs, 2g protein, 10g fat, 2g fiber
Variations for Cosmic Brownie Cookies
Try these twists on Cosmic Brownie Cookies:
- White Chocolate: Swap semi-sweet chips for white chocolate chips.
- Nutty Add-In: Mix in ½ cup chopped pecans or hazelnuts.
- Mint Chocolate: Add ½ tsp peppermint extract and use mint chips.
- Sprinkle Swap: Use chocolate sprinkles or star-shaped sprinkles for variety.
- Gluten-Free: Use a 1:1 gluten-free flour blend instead of all-purpose flour.
Storage
I store Cosmic Brownie Cookies in an airtight container at room temperature for up to 5 days to keep them chewy. For longer storage, I freeze baked cookies or dough balls in a freezer bag for up to 3 months, baking from frozen with an extra 1–2 minutes. To maintain texture, I store in a cool, dry place and layer cookies with parchment to prevent sticking.
Serving Ideas
Make your Cosmic Brownie Cookies a star Fudgy Cosmic Treats:
- Classic: Serve as Fudgy Cosmic Treats with a glass of cold milk.
- Garnish: Add extra sprinkles post-bake for a vibrant look.
- Pairing: Enjoy with hot chocolate or a scoop of vanilla ice cream.
- Presentation: Display in a colorful tin for parties or gifting.
- Occasion: Perfect for birthdays, bake sales, or holiday trays.
FAQs
Can I make these cookies without sprinkles?
Yes, sprinkles are optional; try mini chocolate chips or crushed nuts for topping instead.
Can I freeze the dough for later use?
Yes, scoop dough into balls, freeze on a tray, then store in a freezer bag for up to 3 months; bake from frozen, adding 1–2 minutes.
How do I make the cookies thicker?
Chill the dough for 30 minutes before baking to reduce spreading and create thicker cookies.
Can I use a different type of chocolate?
Yes, try milk chocolate or dark chocolate chips for a different flavor profile.
Why are my cookies too dense?
Avoid overmixing the dough after adding dry ingredients to keep cookies light and chewy.
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Conclusion
These Cosmic Brownie Cookies are the perfect blend of two beloved treats—brownies and cookies. The chewy texture, rich chocolate flavor, and colorful sprinkles make this Fudgy Cosmic Treats a standout addition to any dessert table. Whether you’re baking for a special occasion or craving a sweet treat, these cookies are sure to be a cosmic hit with everyone who tries them.

Cosmic Brownie Cookies
Ingredients
For the Cookies:
- 1/2 cup unsalted butter softened
- 1/2 cup granulated sugar
- 1/2 cup brown sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 1/4 cup unsweetened cocoa powder
- 1 cup all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
For the Ganache Topping:
- 1/2 cup semi-sweet chocolate chips
- 1/4 cup heavy cream
Topping:
- 1/4 cup rainbow candy-coated chocolate sprinkles like mini M&Ms or rainbow chips
Instructions
Preheat the oven:
- Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper.
Make the cookie dough:
- In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy.
- Add the egg and vanilla extract, mixing until combined.
- Sift in the cocoa powder, flour, baking soda, and salt. Mix until a soft dough forms.
Shape and bake:
- Scoop 1 1/2-tablespoon portions of dough (or use a medium cookie scoop) and roll into balls. Place them on the prepared baking sheets, spacing about 2 inches apart.
- Bake for 8-10 minutes, or until the edges are set. The centers may look slightly underdone—this is okay.
- Let the cookies cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.
Make the ganache:
- In a microwave-safe bowl, combine the chocolate chips and heavy cream. Microwave in 20-second intervals, stirring between each, until smooth and glossy.
Assemble the cookies:
- Spoon or spread a small amount of ganache onto the top of each cookie. While the ganache is still wet, sprinkle with rainbow candy-coated sprinkles.
Set and serve:
- Allow the ganache to set at room temperature for 15-20 minutes, or chill in the refrigerator for 10 minutes. Serve and enjoy!
Notes
- For extra fudginess, add 1/4 cup mini chocolate chips to the dough.
- Store cookies in an airtight container at room temperature for up to 3 days.
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