Homemade Cosmic Brownies: 5 Steps to Pure Chocolate Bliss

Posted on December 19, 2025

Homemade Cosmic Brownies

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Ah, Homemade Cosmic Brownies! Just saying the name brings back a flood of childhood memories, doesn’t it? Those chewy, fudgy delights are the ultimate treat, perfect for satisfying that sweet tooth or bringing a smile to anyone’s face. I can still remember the excitement of tearing into the colorful packaging, but trust me, nothing compares to whipping up a batch fresh from your own kitchen!

Homemade Cosmic Brownies - detail 1

These brownies are rich and decadent, with a texture that’s so satisfying it feels like a hug in dessert form. And let’s not forget that luscious chocolate ganache on top, which just melts in your mouth! The best part? Those bright rainbow chips sprinkled on top that add a playful crunch and a pop of color. They’re not just a feast for the stomach but also for the eyes! Making Homemade Cosmic Brownies is a fun adventure that’s super easy to tackle, and I promise they’ll vanish faster than you can say “brownie!” So, let’s dive into this delightful recipe together and create some sweet memories!

Ingredients List

Gathering the right ingredients is crucial for making the best Homemade Cosmic Brownies. Here’s everything you’ll need:

  • 3/4 cup unsalted butter, melted
  • 1 cup granulated sugar
  • 2/3 cup packed brown sugar
  • 2 teaspoons vanilla extract
  • 2 large eggs, room temperature
  • 1 1/4 cups all-purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 1/2 teaspoon baking powder
  • 1 tablespoon cornstarch
  • Pinch of salt
  • 3 tablespoons milk
  • 3/4 cup heavy whipping cream
  • 1 cup semi-sweet chocolate chips
  • 2 small bags of rainbow chips

Make sure to measure everything accurately for perfect results! Trust me, the balance of these ingredients is what will give your brownies that rich, fudgy texture we all love. Happy baking!

How to Prepare Homemade Cosmic Brownies

Now that you’ve got your ingredients all lined up, let’s dive into the fun part—preparing those delicious Homemade Cosmic Brownies! I promise, it’s simpler than you might think. Just follow these steps, and you’ll be enjoying these rich, fudgy treats in no time!

Preheat the Oven and Prepare the Baking Dish

First things first, preheat your oven to 350°F (175°C). This step is super important because it ensures your brownies bake evenly. While the oven is warming up, grab a 9×13 inch baking dish and line it with parchment paper. This makes it so much easier to remove the brownies later without any sticking. Plus, a little baking spray on top of the parchment will help everything slide out smoothly. Trust me, you don’t want to lose even a crumb of these beauties!

Mix the Batter

In a large mixing bowl, combine the melted butter, granulated sugar, brown sugar, and vanilla extract. I always use an electric mixer for this part; it makes life easier! Beat everything together until it’s nice and fluffy—think whipped honey consistency. Then, add the eggs one at a time, mixing well after each addition. This ensures everything gets blended smoothly, resulting in a rich batter full of flavor!

Combine Dry Ingredients

In a separate bowl, whisk together the flour, cocoa powder, baking powder, cornstarch, and salt. This step might seem small, but it’s crucial for avoiding any clumps in your brownies. Now, gradually add this dry mixture to your buttery goodness, alternating with the milk. Start and end with the dry ingredients, and mix on low speed just until everything is combined. You want to be careful not to overmix—this keeps your brownies tender and fudgy!

Bake the Brownies

Once your batter is ready, pour it into the prepared baking dish and spread it out evenly. Pop it in the oven and bake for 18-25 minutes. Keep a close eye on them as they bake! To check for doneness, gently touch the top—if it springs back, they’re ready! I usually use a toothpick test too; it should come out with a few moist crumbs, not wet batter. Remember, you can always bake a few minutes longer, but you can’t un-bake them, so don’t overdo it!

Prepare the Chocolate Ganache

While your brownies cool in the pan, it’s time to make that luscious chocolate ganache. In a small saucepan, heat the heavy whipping cream over medium heat until it’s just simmering. Remove it from the heat and immediately whisk in the chocolate chips until they’re completely melted and smooth. This step is so satisfying, and the smell is heavenly! Set the ganache aside to cool slightly before pouring it over the brownies.

Assemble and Top

Now comes the fun part! Once your brownies are completely cool, pour the chocolate ganache over the top and use a spatula to spread it out evenly. While the ganache is still wet, sprinkle those colorful rainbow chips on top. They’ll stick perfectly, adding that pop of joy you remember from the packaged treats! Allow everything to set for a bit before slicing into squares. I promise you’ll be in brownie heaven!

Nutritional Information

Let’s talk about the nutritional side of these delightful Homemade Cosmic Brownies! While they’re certainly a treat to indulge in, it’s good to know what you’re enjoying. Here’s a rough estimate of the typical nutritional values per brownie:

  • Calories: 214
  • Fat: 12g
  • Saturated Fat: 7g
  • Cholesterol: 40mg
  • Sodium: 63mg
  • Carbohydrates: 25g
  • Fiber: 2g
  • Sugar: 17g
  • Protein: 2g

Keep in mind, these values can vary a bit based on the specific brands of ingredients you use and how big you cut your brownies. But hey, every indulgent bite is worth it, right? Enjoy your homemade creations guilt-free, and remember, it’s all about balance!

Why You’ll Love This Recipe

There are so many reasons to fall head over heels for these Homemade Cosmic Brownies! They’re not just a treat; they’re a delightful experience that brings joy with every bite. Here’s why you’ll adore making (and eating) them:

  • Quick Preparation: With just a 20-minute prep time, you’ll be on your way to baked bliss in no time! Perfect for when those chocolate cravings hit.
  • Rich, Fudgy Flavor: The combination of semi-sweet chocolate and cocoa powder creates a deep, rich flavor that’s simply irresistible. Every bite is like a little piece of heaven!
  • Decadent Chocolate Ganache: Topping your brownies with a silky chocolate ganache adds an extra layer of indulgence that elevates them to a whole new level of deliciousness.
  • Colorful Rainbow Chips: The vibrant rainbow chips not only make these brownies visually appealing but also add a fun crunch that takes you right back to your childhood. They’re like little bursts of happiness!
  • Perfect for Sharing: Whether it’s a family gathering, a bake sale, or just a cozy night in, these brownies are sure to impress. They disappear fast, so be ready to share the love!

Trust me, once you make these Homemade Cosmic Brownies, you’ll want to whip up a batch again and again. They’re the perfect treat for any occasion—or just because you deserve something sweet!

Tips for Success

To make your Homemade Cosmic Brownies turn out perfectly every time, I’ve got a few pro tips to share! These little nuggets of wisdom will help you achieve that rich, fudgy texture and mouthwatering flavor we all crave. Let’s get into it!

Measure Accurately

First and foremost, accurate measurements are key! Baking is a science, and even slight variations can impact the final result. Use a kitchen scale if you’ve got one, or make sure to spoon and level your flour and cocoa powder. This will keep your brownies from being too dry or too dense. Nobody wants a brick when they’re expecting fudgy goodness!

Don’t Overmix the Batter

When combining your ingredients, be gentle! After adding the dry ingredients, mix on low speed just until everything is combined. Overmixing can develop the gluten in the flour, leading to a tougher brownie. We want them to be tender and rich, not chewy like bread!

Keep an Eye on Baking Time

Every oven is different, so keep a close watch on your brownies as they bake. Start checking for doneness around the 18-minute mark. Remember, you can always add a few more minutes, but you can’t take them back once they’re overbaked. Aim for a toothpick that comes out with a few moist crumbs for that ideal fudgy center!

Let Them Cool Completely

After baking, it’s tempting to dive right in, but let your brownies cool completely in the pan before slicing. This allows the ganache to set and makes cutting easier. Plus, it helps the flavors meld together beautifully. Patience is a virtue, my friend!

Experiment with Toppings

Feel free to get creative with your toppings! While rainbow chips are a classic, consider adding nuts, sprinkles, or even a drizzle of caramel for a fun twist. These little changes can elevate your brownies and make them uniquely yours!

With these tips, you’ll be well on your way to making the best Homemade Cosmic Brownies ever! Enjoy the process and remember to have fun in the kitchen. Happy baking!

Homemade Cosmic Brownies - detail 2

Variations on Homemade Cosmic Brownies

One of the best things about Homemade Cosmic Brownies is how easily they can be customized to suit your taste preferences or to experiment with new flavors! Here are some fun variations to try that’ll keep things exciting:

Nutty Delight

If you love a little crunch, consider adding chopped nuts to your batter. Walnuts or pecans are fantastic choices, adding a lovely texture and flavor contrast to the fudgy base. Just fold in about 1/2 cup of your favorite nuts when mixing the dry ingredients, and you’ll have a delightful nutty surprise in every bite!

Different Chocolate Types

Want to switch things up? Feel free to experiment with different types of chocolate! You can use milk chocolate chips for a sweeter, creamier flavor or dark chocolate chips if you prefer a more intense chocolate experience. You could even mix it up by combining semi-sweet and white chocolate chips for a fun twist!

Minty Fresh

For those who enjoy a refreshing kick, try adding a teaspoon of peppermint extract to your batter. This gives the brownies a delightful minty flavor that pairs beautifully with chocolate. You can even top them with crushed candy canes for a festive touch during the holidays!

Peanut Butter Swirl

Peanut butter lovers, rejoice! You can create a luscious peanut butter swirl by dolloping some creamy peanut butter on top of the brownie batter before baking. Use a knife to gently swirl it in for a marbled effect. The combination of chocolate and peanut butter is always a hit!

Caramel Drizzle

Imagine biting into a brownie with a gooey caramel center! You can achieve this by adding caramel sauce into your batter or drizzling it over the ganache once it’s set. Just make sure to use a good quality caramel sauce for the ultimate indulgence!

These variations not only keep your baking adventures fresh but also allow you to tailor your Homemade Cosmic Brownies to whatever mood strikes you. So, don’t hesitate to get creative and make them your own! Happy baking!

Storage & Reheating Instructions

Once you’ve enjoyed your delicious Homemade Cosmic Brownies, you might find yourself with some leftovers (if you’re lucky!). Storing them properly is key to keeping that fudgy texture and rich flavor intact. Here’s how I do it:

First, let your brownies cool completely in the pan before storing them. This helps prevent condensation, which can make them soggy. Once they’re cool, you can cut them into squares and place them in an airtight container. I like using a glass or plastic container with a tight-fitting lid. If you want to keep them extra fresh, you can layer parchment paper between the brownies to avoid sticking. Trust me, it makes all the difference!

Stored this way, your brownies should stay delicious for about 3-5 days at room temperature. If you want to keep them longer, consider freezing them! Just wrap each square tightly in plastic wrap, then place them in a freezer-safe bag or container. They’ll keep well in the freezer for up to 3 months. When you’re ready to enjoy one, just take it out and let it thaw at room temperature for about 30 minutes.

Now, if you’re craving that fresh-from-the-oven taste, reheating is super easy! For the best results, I recommend using the microwave. Just pop a brownie on a microwave-safe plate and heat it for about 10-15 seconds. This warms it up nicely without drying it out. If you prefer a crispier edge, you can also reheat them in the oven at 350°F (175°C) for about 5-10 minutes. Just be sure to keep an eye on them so they don’t overcook!

With these storage and reheating tips, you’ll be able to savor your Homemade Cosmic Brownies for days to come. Enjoy every last bite!

Share Your Experience

I’d love to hear about your adventures in making these Homemade Cosmic Brownies! Did you try any fun twists or variations? Maybe you added some nuts or experimented with different types of chocolate? Whatever your experience, I want to know all about it!

Feel free to leave a comment below and share your baking journey—what worked, what didn’t, and any tips you discovered along the way. It’s always inspiring to see how others put their spin on this classic treat! Plus, your stories might just spark new ideas for someone else looking to whip up their own batch.

So don’t be shy! Let’s create a little community of brownie lovers and celebrate the joy of baking together. I can’t wait to read your stories and see how you made these brownies your own!

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Homemade Cosmic Brownies

Homemade Cosmic Brownies: 5 Steps to Pure Chocolate Bliss


  • Author: Elizabeth R. Ehlers
  • Total Time: 45 minutes
  • Yield: 12 servings 1x
  • Diet: Vegetarian

Description

Homemade Cosmic Brownies are rich, fudgy treats topped with chocolate ganache and colorful rainbow chips.


Ingredients

Scale
  • 3/4 cup unsalted butter, melted
  • 1 cup granulated sugar
  • 2/3 cup packed brown sugar
  • 2 teaspoons vanilla extract
  • 2 eggs, room temperature
  • 1 1/4 cups flour
  • 3/4 cup unsweetened cocoa powder
  • 1/2 teaspoon baking powder
  • 1 tablespoon cornstarch
  • pinch of salt
  • 3 tablespoons milk
  • 3/4 cup heavy whipping cream
  • 1 cup semi-sweet chocolate chips
  • 2 small bags of rainbow chips

Instructions

  1. Preheat oven to 350 degrees and line a 9×13″ baking dish with parchment paper. Mist with baking spray and set aside.
  2. Beat melted butter, sugars, and vanilla in a large bowl using an electric mixer.
  3. Add eggs, one at a time, mixing until well incorporated.
  4. In a separate bowl, whisk together flour, cocoa powder, baking powder, cornstarch, and salt.
  5. Gradually add the flour mixture to your batter, mixing on low speed. Alternate adding flour and milk until combined.
  6. Scoop batter into your baking pan and spread evenly.
  7. Bake at 350°F for 18-25 minutes, taking care not to overcook.
  8. Remove from oven and allow to cool in the pan.
  9. Heat heavy whipping cream in a saucepan until simmering. Remove from heat and add chocolate chips. Whisk until melted and smooth.
  10. Pour ganache over the brownies and smooth with a spatula.
  11. Sprinkle rainbow chips on top while the frosting is still wet.
  12. Allow to set, then slice and enjoy!

Notes

  • Nutrition information is a rough estimate; actual values may vary.
  • Thinner brownies are made in a 9×13 inch pan; thicker brownies in a 9×9 inch pan may need extra baking time.
  • Prep Time: 20 minutes
  • Cook Time: 25 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 brownie
  • Calories: 214
  • Sugar: 17g
  • Sodium: 63mg
  • Fat: 12g
  • Saturated Fat: 7g
  • Carbohydrates: 25g
  • Fiber: 2g
  • Protein: 2g
  • Cholesterol: 40mg

Keywords: Cosmic Brownies, Homemade Brownies, Chocolate Dessert

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