There’s a certain joy that comes from transforming simple ingredients into something truly delightful, and that’s exactly what the enchanting Unicorn Bars achieve. Picture this: the aroma of chocolate wafts through your kitchen as you whisk together a rich, fudgy brownie base, all while your kids giggle and toss vibrant sprinkles into the mix. These magical treats aren’t just a feast for the eyes; they’re an invitation to let your creativity shine! Perfect for birthday parties, festive gatherings, or simply a cheerful pick-me-up, Unicorn Bars promise a rainbow of flavors with their creamy buttercream frosting and playful colors. Plus, they’re easy enough to whip up on a whim, making them a fantastic baking project for the whole family. So, let’s dive into the fun and bring a splash of color to your next dessert table!
Why Are Unicorn Bars So Fun to Make?
Colorful, these Unicorn Bars bring a burst of joy to any occasion! Easy to prepare, this recipe is perfect for bakers of all skill levels, even the little ones. Versatile, you can customize the sprinkles for any festive theme, making them a delightful treat for birthdays or holidays. Irresistible flavor, the combination of fudgy brownie and creamy frosting is simply heavenly. Family-friendly, they’re an ideal baking project to share moments with your kids and spark creativity—like our selection of fun baking ideas. Get ready for a whimsical experience!
Unicorn Bars Ingredients
• Make your baking magical!
For the Brownie Layer:
Butter – Adds moisture and richness; substitute with margarine for a dairy-free option.
Sugar – Sweetens the brownie layer; using brown sugar introduces a deeper flavor.
Eggs – Provides structure; can use flax eggs for a vegan alternative.
Flour – Gives the bars their steadiness; a gluten-free flour blend works as a substitute.
Cocoa Powder – Delivers chocolate flavor and color; unsweetened cocoa is ideal for these Unicorn Bars.
Almond Extract – Enhances flavor; feel free to substitute with vanilla extract if preferred.
For the Buttercream Frosting:
Butter – Essential for creaminess; utilize vegan butter for a dairy-free version.
Powdered Sugar – Sweetens and thickens the frosting; add more to achieve your desired consistency.
Milk – Helps create a smooth texture; almond or coconut milk can be used for a dairy-free option.
Food Coloring – To create vibrant swirls; consider using natural food coloring as an alternative.
Let the rainbow of flavors and giggles commence as you gather these delightful ingredients for your Unicorn Bars!
How to Make Unicorn Bars
Preheat the oven:
Begin by preheating your oven to 350°F (175°C). This ensures that your Unicorn Bars bake evenly and attain that perfect fudgy texture.Prepare the baking pan:
Grease a 9×13 inch baking pan with butter or line it with parchment paper. This helps the bars come out easily after baking and keeps cleanup simple.Melt and mix:
In a medium saucepan, melt the butter over low heat. Remove from heat, add the sugar, and mix until fully combined, creating a creamy, smooth base.Add the wet ingredients:
Stir in the eggs, one at a time, followed by the almond extract. Mix well until everything is nicely blended and fluffy.Combine dry ingredients:
Gradually stir in the flour and cocoa powder until just combined. Be careful not to overmix, as this can affect the texture of your brownie layer.Pour into the pan:
Pour the brownie batter into your prepared baking pan, spreading it evenly with a spatula. Smooth out the top for even baking and a polished finish.Bake the brownies:
Place the pan in the preheated oven and bake for about 20-25 minutes. The edges should pull away slightly from the pan, and a toothpick should come out with a few moist crumbs.Cool completely:
Once baked, remove the brownies from the oven and let them cool in the pan on a wire rack. Make sure they are completely cool before adding the frosting.Make the buttercream frosting:
In a large mixing bowl, beat the softened butter until creamy. Gradually add the powdered sugar and mix at low speed, then add milk and beat until smooth. Finally, mix in food coloring to achieve your desired vibrant swirls.Frost and decorate:
Once the brownies are cool, spread the buttercream evenly over the brownie base. Top with a generous sprinkle of colorful rainbow sprinkles for that magical touch.Slice and enjoy:
Use a sharp knife to cut the Unicorn Bars into squares. Indulge in this delightful treat with family and friends, or save some for later!
Optional: Drizzle with a little chocolate sauce for an extra indulgent touch.
Exact quantities are listed in the recipe card below.

What to Serve with Unicorn Bars?
Imagine the delight of pairing these colorful treats with complementary flavors that enhance their magic!
Vanilla Ice Cream: A scoop of creamy vanilla ice cream balances the richness of the fudge while adding a refreshing touch.
Fruit Salad: A mix of fresh, juicy fruits provides a juicy contrast, cutting through the sweetness and adding a vibrant twist.
Milkshake: A whimsical milkshake, perhaps strawberry or banana, enhances the playful vibe and brings a creamy texture to the dessert table.
Chocolate Fondue: Set up a chocolate fondue station for dipping these bars, creating an interactive and dreamy dessert experience for everyone.
Rainbow Fruit Skewers: Skewers of assorted fruits mirror the colorful theme, adding an irresistible crunch and freshness to the meal.
Sparkling Lemonade: This fizzy drink will brighten your gathering, its zesty notes pairing beautifully with the sweet treats.
Mini Cupcakes: Add another layer of sweetness and fun with mini cupcakes that can be customized for any theme or color!
Chocolate Dipped Strawberries: These rich berries offer a decadent bite that complements the flavors of the Unicorn Bars, adding an elegant touch to your spread.
Let your imagination run wild as you explore these delightful pairings, enhancing the festive spirit of your magical celebration!
Make Ahead Options
These delightful Unicorn Bars are perfect for meal prep, saving you time for celebrations and busy weeknights! You can prepare the brownie layer up to 24 hours in advance by baking it and storing it in an airtight container at room temperature. Just make sure it’s completely cool before wrapping it to maintain its fudgy texture. The buttercream frosting can also be made ahead—store it in the refrigerator for up to 3 days, bringing it to room temperature before spreading it on the brownies. When you’re ready to serve, simply frost the cooled brownies, add your colorful sprinkles, and enjoy these magical treats!
Storage Tips for Unicorn Bars
Room Temperature: Keep Unicorn Bars in an airtight container at room temperature for up to 5 days to maintain their soft, chewy texture.
Fridge: For longer freshness, store the bars in the fridge in a sealed container, where they can last up to 7 days.
Freezer: To enjoy later, freeze individual squares wrapped in plastic wrap and then placed in a zip-top bag for up to 3 months. Thaw in the fridge before serving.
Reheating: To warm them slightly, microwave a square for about 10-15 seconds; this makes the brownie layer even more fudgy and delightful!
Unicorn Bars Variations & Substitutions
Feel free to sprinkle some magic on these Unicorn Bars by experimenting with unique twists and swaps that will invite your creativity to shine!
Vegan Delight: Substitute eggs with flax eggs (1 tablespoon flaxseed meal + 2.5 tablespoons water) for a delicious vegan version.
Gluten-Free Bliss: Use a gluten-free flour blend instead of regular flour to make these bars safe for gluten-sensitive friends.
Nutty Flavor: Swap almond extract with hazelnut or pecan extract for a delightful nutty twist that complements the chocolate beautifully.
Fruit-Infused Frosting: Add pureed strawberries or raspberries into the frosting for a fruity, vibrant flavor that pairs perfectly with the chocolatey base.
Chocolate Extravaganza: Mix chocolate chips or chunks into the brownie batter for an extra chocolatey experience that’ll tantalize every chocolate lover’s taste buds.
Spicy Kick: Add a pinch of cayenne pepper or chili powder to the brownie batter for a surprising kick that balances the sweetness.
Citrus Burst: Infuse the buttercream with lemon or orange zest for a refreshing, zesty flavor that dances on your palate.
Seasonal Sprinkles: Change up the sprinkles with seasonal options such as autumn leaves, red and green for the holidays, or pastels for spring celebrations.
Adding these delightful spins can elevate your Unicorn Bars to new heights and make them fit perfectly for any occasion!
Tips for the Best Unicorn Bars
Cool Completely: Let the brownie layer cool entirely before frosting; this prevents the buttercream from melting and keeps frosting intact.
Measure Carefully: Use precise amounts for sugar and flour to achieve the perfect fudgy texture in your Unicorn Bars; too much flour can lead to dry bars.
Customize Colors: Feel free to use different food coloring or sprinkle combinations according to the occasion, making these Unicorn Bars versatile for any celebration.
Avoid Overmixing: Mix the brownie batter just until combined; overmixing can result in a dense texture rather than a soft, chewy treat.
Chill the Frosting: If the buttercream frosting feels too soft, refrigerate it for 10-15 minutes for easier spreading on your cooled brownies.
Serve Fresh: For the best taste and texture, serve the Unicorn Bars within a couple of days of making them, though they can last up to five days in an airtight container.

Unicorn Bars Recipe FAQs
How do I choose the right ripeness for the ingredients?
Absolutely! For the best texture and flavor, choose unsalted butter that is softened but not melted; this helps achieve a creamy buttercream frosting. Eggs should be large and fresh, with the shells free from any cracks. If you’re opting for a vegan substitute, make sure your flax eggs are made by mixing one tablespoon of ground flaxseed with three tablespoons of water, let it sit for 5 minutes until it thickens.
What are the best storage methods for Unicorn Bars?
To maintain their delightful taste, store Unicorn Bars in an airtight container at room temperature for up to 5 days. If you want them to stay fresh longer, place them in the refrigerator where they’ll last up to 7 days. Remember, letting them sit out for an hour before serving will bring back some of that freshly baked warmth!
Can I freeze Unicorn Bars? How do I do that?
Definitely! To freeze your Unicorn Bars, cut them into squares, wrap each piece tightly in plastic wrap, and place them in a zip-top freezer bag. These bars can be frozen for up to 3 months. When you’re ready to enjoy them, just thaw them in the fridge overnight or for a few hours at room temperature. They’ll taste just as magical!
What if my brownies don’t set in the center?
Very! If you find your brownies undercooked in the center, simply return them to the oven for an additional 5-10 minutes. Keep an eye on them, and check with a toothpick inserted into the center; it should come out with a few moist crumbs but not wet batter. Always let them cool fully in the baking pan before frosting, as they continue to set while cooling.
Are there any dietary considerations for Unicorn Bars?
Of course! If you have someone with allergies or dietary restrictions, you can make these bars more inclusive. Swap regular butter for vegan butter to accommodate dairy-free diets, and for those who are gluten-sensitive, opt for a gluten-free flour blend. Always ensure that your food coloring and sprinkles are also allergy-friendly, as some brands may have cross-contaminants.
How can I ensure my frosting doesn’t melt off the brownies?
Great question! It’s crucial to let the brownie layer cool completely before adding the frosting; otherwise, it will melt. If your buttercream frosting seems too soft, refrigerate it for 10-15 minutes to firm it up slightly, making it much easier to spread evenly over the brownie base. This will keep your delightful Unicorn Bars looking and tasting perfect!
