Sparkling Mermaid Cookie Bars


Dive into a world of enchantment with these utterly delightful and magical Mermaid Cookie Bars! More than just a dessert, these vibrant cookie bars are a celebration, shimmering with pastel M&M’s, swirls of creamy buttercream frosting, and a generous scattering of fancy sparkly sugars and sprinkles. For an extra touch of indulgence, we’ve folded in white chocolate chips, making each bite a treasure. Perfect for any gathering, these captivating bars are sure to make a splash and be the undeniable hit of your next party!

Whether you’re planning an oceanic birthday bash, a sun-kissed pool party, a beachside barbecue, or simply want to bring a touch of whimsy to your everyday, these Mermaid Cookie Bars are your go-to recipe. They’re not just beautiful; they’re incredibly delicious and surprisingly simple to create, making them ideal for busy hosts who want to impress without stress.

Enchanting Mermaid Cookie Bars adorned with pastel M&M's and shimmering sprinkles, perfect for magical parties and summer celebrations.

The inspiration for these enchanting treats struck on a whim! After crafting a batch of M&M Easter Cookies, I found myself with an abundance of lovely pastel M&M’s. Too pretty to waste, they begged to be transformed into something equally festive. What better way to use them than in a soft, chewy cookie bar base, crowned with a dreamy frosting and dazzling decorations?

Homemade cookie bars, especially those adorned with shimmering sparkles and a medley of colorful candies, bring such joy. They evoke a sense of nostalgia and comfort, while the mermaid theme adds an irresistible modern twist. These bars are a testament to the fact that creating stunning desserts doesn’t have to be complicated, and the reward is always a chorus of oohs and aahs from delighted guests.

One of the best features of this recipe is its incredible versatility. Feel free to let your imagination be your guide and change up the color of your frosting and the theme of your sprinkles to match any holiday, celebration, or specific color scheme you desire. Imagine festive reds and greens for Christmas, bright yellows and oranges for autumn, or school colors for a graduation party. The possibilities are truly endless!

For my mermaid-themed creations, I sourced my dazzling sprinkles from Fancy Sprinkles. Their “Cotton Candy Sprinkles” and “Haunted Mansion Sugar” provided the perfect glimmer and pastel hues for an underwater fantasy. If you’re going for an authentic mermaid look, they even offer a fantastic Mermaid Cove Sprinkle Medley that would look absolutely spectacular on these bars, bringing an extra layer of ocean magic to your dessert spread.

Close-up of Mermaid Cookie Bars showcasing their pastel M&M's, shimmering sugar, and creamy frosting, ready for a party.

Mermaid Inspiration: A Journey Through Myth and Modernity

Mermaids have captivated human imagination for millennia, appearing in folklore, mythology, and literature across diverse cultures. My own fascination with these mythical beings, dwelling in the mysterious depths of the ocean, often sparks creative ideas, and these cookie bars are a perfect example.

The origins of mermaids can be traced back thousands of years. One of the earliest known references comes from ancient Assyria, where the goddess Atargatis transformed herself into a mermaid. Worshiped around 4000–3000 years ago in ancient Assyria and later throughout the Mediterranean, Atargatis was revered as the goddess of the moon, feminine powers, and water. Her legend is believed to have inspired countless mermaid tales across the globe for centuries.

In more recent times, mermaids have continued to enchant us through various forms of media. For many, the most familiar rendition is Hans Christian Andersen’s poignant 1836 fairy tale, “The Little Mermaid.” This classic story was famously adapted by Disney into its beloved 1989 animated film The Little Mermaid, which has since become a cultural touchstone. Beyond animated classics, mermaids have also made their way into live-action cinema, with Daryl Hannah’s iconic portrayal in the 1984 romantic comedy Splash. More contemporary films like “Aquaman” (featuring both mermen and mermaids) and “Aquamarine” further showcase the enduring appeal of these mythical ocean dwellers, demonstrating their timeless ability to inspire wonder and fantasy. This rich history and vibrant presence in popular culture make the mermaid theme an irresistible choice for any celebration, lending an air of magic and adventure.

Batch of Mermaid Cookie Bars arranged on a cooling rack, showing the varied pastel decorations and appealing texture.

Essential Ingredients for Your Mermaid Masterpiece

Crafting these dazzling Mermaid Cookie Bars requires a thoughtful selection of ingredients for both the chewy sugar cookie base and the luscious buttercream frosting. Each component plays a vital role in achieving the perfect texture, flavor, and visual appeal.

For the Sugar Cookie Bars:

  • Unsalted butter (softened to room temperature for smooth creaming)
  • Granulated sugar (provides classic sweetness and tender texture)
  • Brown sugar (adds a subtle molasses flavor and extra chewiness)
  • Eggs (bind the ingredients and add richness)
  • Vanilla extract (enhances overall flavor)
  • All-purpose flour (the structural base of our cookie bars)
  • Baking soda (helps with leavening and browning)
  • Baking powder (additional leavening for a soft, fluffy bar)
  • Salt (balances sweetness and amplifies other flavors)
  • Optional: White chocolate chips (for an added layer of sweetness and delightful texture, perfectly complementing the pastel theme)

For the Easy Buttercream Frosting:

  • Butter (softened, forms the rich base of the frosting)
  • Powdered sugar (essential for a smooth, creamy frosting texture)
  • Vanilla extract (for a classic, aromatic flavor)
  • Milk of choice (to adjust consistency – start with a little and add more as needed)
  • Food coloring or gel (purple, blue, pink, or green are excellent choices to evoke a mermaid palette)

For the Magical Mermaid Extras:

  • Pastel M&M’s: These candies are not only delicious but also serve as beautiful “scales” on our mermaid cookie bars, creating a whimsical fish-like pattern.
  • Sprinkles and Sugars of Choice: Opt for mermaid-inspired colors like blues, purples, and greens, along with iridescent or pearlized sugars, to truly bring the oceanic theme to life. These will add sparkle and texture, making your dessert bars visually stunning and irresistibly festive!

A pan of freshly baked Mermaid Cookie Bars, before frosting, showing a golden-brown edge.

How to Make Enchanting Mermaid Sugar Cookie Bars

Creating these magical cookie bars is a fun and straightforward process. Follow these steps carefully to ensure your Mermaid Cookie Bars are as delicious as they are beautiful!

The Cookie Bar Base:

  1. Begin by preheating your oven to 350 degrees Fahrenheit (175°C). Prepare a 9 x 13 inch baking dish by lining it with parchment paper, leaving an overhang on the sides for easy removal, or thoroughly spraying it with nonstick cooking spray. Set this aside.
  2. In a large mixing bowl, using an electric mixer, beat together the softened unsalted butter with both granulated sugar and brown sugar. Cream these ingredients together for about 3-5 minutes, until the mixture is light, fluffy, and pale in color. This step is crucial for incorporating air and creating a tender cookie bar. Next, beat in the eggs one at a time, followed by the vanilla extract, mixing until the mixture is smooth and well combined.
  3. In a separate small bowl, whisk together the dry ingredients: all-purpose flour, baking soda, baking powder, and salt. Gradually add this dry mixture to the wet ingredients in the large bowl, beating on low speed until just combined. Be careful not to overmix, as this can lead to tough cookie bars. If you’re adding white chocolate chips, gently fold them in during this stage.
  4. Evenly spread the cookie dough batter into your prepared baking pan. Ensure the layer is uniform for even baking. Bake in the preheated oven for 20 minutes, or until the edges are beautifully golden brown and a toothpick inserted into the center comes out with moist crumbs, not wet batter. Remove the pan from the oven and allow the cookie bars to cool completely on a wire rack before attempting to frost them. Cooling thoroughly prevents the frosting from melting and sliding off.

The Easy Buttercream Frosting:

  1. In a clean mixing bowl, combine all the frosting ingredients: softened butter, powdered sugar, vanilla extract, and milk. Begin by adding 3 tablespoons of milk. Beat with an electric mixer until the mixture is smooth, creamy, and fluffy. If the frosting is too thick, add more milk, one teaspoon at a time, until you reach your desired consistency – thick enough to hold its shape, but spreadable. If using food coloring, add a few drops and mix until you achieve a beautiful mermaid-inspired hue (e.g., light blue, purple, or seafoam green).
  2. Once the cookie bars are completely cool, evenly spread the prepared buttercream frosting over the entire surface. A spatula or offset knife works well for this.

Magical Mermaid Extras:

  1. Now for the fun part: decorating! Thoughtfully place the pastel M&M’s on top of the frosted cookie bars in overlapping rows to resemble the shimmering scales of a fish. Then, liberally sprinkle your chosen color-friendly sprinkles and sparkling sugars across the bars, focusing on blues, purples, and greens to enhance the mermaid theme. Once decorated, cut the large cookie slab into individual bars using a sharp knife. Serve immediately and enjoy the magic!

Finished Mermaid Cookie Bars, artfully decorated with M&M's and sprinkles, presented for serving.

These festive mermaid dessert bars are not only simple to whip up but also guarantee a total splash of fun for all your mermaid party ideas! Their dazzling appearance and irresistible taste make them a memorable treat that guests of all ages will adore. Get ready to embark on a culinary adventure that’s as easy as it is enchanting.

Discover More Delish Cookie Bar Recipes!

If you’ve fallen in love with the ease and versatility of cookie bars, you’re in luck! We have a treasure trove of other delightful recipes that are just as fun and delicious to make:

  • Patriotic M&M Party Cookie Bars: Celebrate with red, white, and blue!
  • Classic M&M Cookie Bars: A timeless favorite for any occasion.
  • M&M Marshmallow Bars: Chewy, gooey, and utterly irresistible.
  • Easter M&M Chocolate Chip Blondies: Perfect for spring festivities.
  • Festive Christmas Cookie Bars: Get into the holiday spirit with these delightful treats.
  • Frosted Soft Sugar Cookie Bars: The ultimate canvas for any decoration.
  • Funfetti Party Cookie Bars: Every day is a party with these sprinkles-packed bars!

Mermaid Cookie Bars

By Kim Lange

These fun & magical Mermaid Cookie Bars are so pretty, bejeweled with pastel colored m&m’s, creamy buttercream frosting, fancy sparkly sugar & sprinkles galore! We even added some white chocolate chips for extra deliciousness.
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Prep Time

15 minutes

Cook Time

20 minutes


Course
Dessert


Servings

12
Servings
Calories

Ingredients

Cookie Bars

  • ½
    cup
    unsalted butter, softened
    (1 stick)
  • ½
    cup
    granulated sugar
  • ½
    cup
    brown sugar
    (lightly packed)
  • 2
    large
    eggs
  • 2
    teaspoons
    vanilla extract
  • 2
    cups
    all-purpose flour
  • ½
    teaspoon
    baking soda
  • ½
    teaspoon
    baking powder
  • ¼
    teaspoon
    salt
  • optional:
    1 cup white chocolate chips

Easy Buttercream Frosting

  • ½
    cup
    butter, softened
  • 3-4
    cups
    powdered sugar
  • 2
    teaspoons
    vanilla extract
  • 3-4
    tablespoons
    milk
  • Food coloring or gel
    (purple, blue, pink or green are good option colors)

Mermaid Extras

  • Pastel M&M’s, sprinkles, sugars of choice
    (Mermaid-inspired colors like blue, purple and green mainly, which go perfectly on these mermaid dessert bars!)

Instructions

Cookie Bars

  • Preheat oven to 350 degrees. Line a 9 x 13 inch baking dish with parchment paper or spray with nonstick cooking spray and set aside.
  • In a large bowl, beat together 1 stick of softened butter, brown sugar, and white granulated sugar with an electric mixer until light and fluffy for about 3-5 minutes. Beat in the eggs and vanilla until smooth.
  • In a small bowl, sift together the flour, baking soda, baking powder, and salt. Gradually add dry ingredients to the batter a little at a time, beating over low speed. Add chocolate chips if desired.
  • Evenly spread the batter into the prepared baking pan. Bake in the preheated oven for 20 minutes, or until edges are golden brown. Remove from the oven and allow to cool completely before frosting.

Easy Buttercream Frosting

  • Stir all ingredients together until smooth and fluffy. Start by adding 3 tablespoons milk and work up from there until frosting is the desired consistency.
  • Spread over cooled cookie bars.

Mermaid Extras

  • Place M&M’s on top of cookie bars, to resemble scales like on a fish and add color-friendly sprinkles and sugars as desired. Cut into bars and serve.

Notes

  • Storage: Store any leftover Mermaid Cookie Bars in an airtight container on the counter for up to 5 days. Ensure they are kept away from direct sunlight or heat to maintain freshness.
  • Freezing: To freeze your sugar cookie bars for future enjoyment, first place them in the refrigerator for a few hours. This allows the frosting to firm up, preventing it from getting smushed when you stack the bars. Once chilled, transfer the bars to a freezer-safe container or a heavy-duty zipper freezer bag, arranging them in a single layer or with parchment paper between layers. They can be frozen for up to 3 months. When ready to enjoy, thaw them on the counter at room temperature before serving.
  • Customization: Don’t hesitate to experiment with different food coloring shades for your frosting. Teal, coral, or even a blend of colors can create a stunning ombre effect. The choice of sprinkles is also limitless – consider edible glitter, tiny edible pearls, or a mix of various sprinkle shapes to add unique textures and shine.
  • Party Tip: For a mermaid-themed party, arrange these cookie bars on a platter adorned with blue fabric or netting, seashells, and perhaps a few faux pearls to enhance the underwater ambiance. They pair beautifully with other ocean-themed treats like blue lemonade or fish-shaped crackers.

Keywords
bars, cookie bars, cookies, mermaid, party treats, sprinkles




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