Easy Frosted Sugar Cookie Bars: The Ultimate Crowd-Pleasing Dessert Recipe

Are you searching for the perfect dessert to effortlessly delight a large gathering? Look no further than these incredible Frosted Sugar Cookie Bars! Imagine a tender, soft sugar cookie base, generously slathered with rich, homemade buttercream frosting, and adorned with a festive scattering of colorful sprinkles. These aren’t just any cookie bars; they’re a vibrant, pretty, and utterly perfect treat that promises to bring smiles to every face. This recipe simplifies the classic sugar cookie experience, making it an ideal choice for parties, potlucks, or any occasion where you need a delicious dessert without the fuss. Let’s dive into making this crowd-pleasing favorite together!

Why Frosted Sugar Cookie Bars are a Game Changer
These Frosted Sugar Cookie Bars have become a beloved staple in my baking repertoire for good reason. They stand out as one of those effortlessly delicious desserts that I find myself preparing time and time again. The sheer simplicity combined with their universal appeal makes them an absolute favorite. Every single time I present these bar cookies, they vanish almost immediately, proving their status as a guaranteed crowd-pleaser.
The foundation of this recipe is a perfectly soft and tender sugar cookie layer. It achieves that ideal balance of buttery richness and just the right amount of sweetness, providing a delightful canvas for the frosting. This cookie base is robust enough to hold up to the creamy topping yet delicate enough to melt in your mouth.
The real magic happens with the frosting: a luscious, homemade buttercream. This velvety frosting is the ideal complement to the sweet cookie. But what truly elevates these bars is the final touch – a generous scattering of fun, colorful sprinkles that not only add a playful visual appeal but also a delightful textural crunch.
Think of it as all the joy and deliciousness of traditional sugar cookies, but with significantly less effort! Instead of the tedious task of rolling out dough, cutting individual shapes, baking batches, and then frosting each cookie one by one, you simply spread the dough into a single pan and frost the entire surface at once. This streamlined process saves you valuable time and energy, making these Frosted Sugar Cookie Bars a complete win in my book!

Crafting the Perfect Buttercream Frosting and Festive Sprinkles
The frosting is a crucial element of these Frosted Sugar Cookie Bars, and my recipe features a simple yet incredibly delicious homemade buttercream. This classic frosting is crafted from a handful of pantry staples: softened butter, delicate powdered sugar, a splash of milk, and a hint of pure vanilla extract. These ingredients, when beaten together, transform into a light, airy, and wonderfully spreadable topping that perfectly balances the sweetness of the cookie base.
For these particular cookie bars, I love adding a touch of pink food coloring to the buttercream. This not only makes them visually appealing but also evokes a nostalgic, classic sugar cookie vibe. I fondly remember those giant, soft pink sugar cookies from gas stations when I was a child. My grandma would always buy them for me, and that simple gesture created a lasting, joyful memory. The pink frosting truly captures that same comforting, delightful feeling.
However, the beauty of this recipe lies in its adaptability. You have complete creative freedom to color the frosting however you desire! Want a vibrant blue for a boy’s birthday? A cheerful yellow for a spring celebration? Or perhaps a sophisticated, uncolored white frosting for an elegant touch? All options are equally beautiful and delicious. The choice is entirely yours, allowing you to tailor these bars to any theme or occasion.
And let’s not forget the sprinkles! While entirely optional, sprinkles add an undeniable festive charm. Feel free to unleash your creativity here as well. You can opt for traditional rainbow sprinkles, sparkling sanding sugar, themed sprinkles for holidays (think red and green for Christmas, pastels for Easter, or orange and black for Halloween), or even specialized shapes. The type, color, and flavor of sprinkles you choose can significantly enhance the visual appeal and add a fun textural element to your Frosted Sugar Cookie Bars. If you prefer a simpler look, leaving them off completely is also a perfectly valid choice.

Effortlessly Serve Any Crowd with These Versatile Treats
It’s always a smart idea to have a few go-to, tried-and-true recipes that you know will impress any crowd, and these Frosted Sugar Cookie Bars are unequivocally one of them. They are a timeless favorite, appealing to both children and adults with their comforting flavor and festive appearance. The versatility and ease of this recipe make it an essential addition to any baker’s repertoire.
One of the most remarkable aspects of this recipe is its incredible scalability. While the recipe is typically portioned to yield approximately 24 servings, you can easily adjust the cutting size to produce significantly more. In fact, I’ve successfully used this exact recipe to cater an event, slicing the bar cookie into tiny, bite-sized cubes. On that occasion, a single batch provided upwards of 50 individual servings, arranged beautifully on a platter. They were an absolute hit, proving that even small bites of these delicious bars are enough to leave a lasting impression.
Whether you need a substantial dessert for a large party, a tray of treats for a school event, or just enough for a family gathering, these bars adapt perfectly. You can choose to cut them into generous squares for a hearty dessert or into smaller, delicate pieces for a varied dessert table. This flexibility is truly the beauty of this recipe – you have full control over how many servings you create, making it ideal for any occasion and any number of guests.
They are not only easy to make but also transport well, making them ideal for potlucks, picnics, or gifting. Imagine presenting a vibrant tray of these beautiful bars at your next gathering; they’re guaranteed to be a conversation starter and a dessert everyone will rave about. The combination of a soft cookie base and creamy frosting, along with the optional playful sprinkles, creates a delightful texture and flavor experience that’s hard to resist.

Essential Tips for Baking Perfect Sugar Cookie Bars
To ensure your Frosted Sugar Cookie Bars turn out perfectly every time, here are a few key baking tips:
- Room Temperature Ingredients: Always ensure your butter and eggs are at room temperature for both the cookie dough and the frosting. This allows them to cream together more smoothly, resulting in a lighter, more consistent texture.
- Do Not Overmix: When adding dry ingredients to the wet mixture for the cookie dough, mix only until just combined. Overmixing can develop the gluten in the flour too much, leading to a tough, dense cookie instead of a soft, tender one.
- Even Spreading: For a uniformly baked and perfectly flat cookie base, ensure you spread the dough evenly across the baking sheet. Using parchment paper on top and a rolling pin, as suggested in the recipe, is a fantastic trick for achieving this.
- Don’t Overbake: Keep a close eye on the cookie bars while they bake. They should be firm and lightly golden brown around the edges, but still soft in the center. Overbaking will result in dry, crumbly bars.
- Cool Completely: This step is non-negotiable! The cookie bars must be completely cooled before you apply the frosting. If the bars are even slightly warm, the buttercream will melt and become a runny mess. Patience here is key for a beautifully frosted finish.
- Achieving Fluffy Frosting: Beat the butter for the frosting until it’s light and fluffy before adding the powdered sugar. Once the powdered sugar is incorporated, continue beating on medium-high speed for several minutes until the frosting is airy and smooth. This step incorporates air, making the buttercream irresistibly creamy.
Storage and Make-Ahead Options
Frosted Sugar Cookie Bars are wonderful because they hold up well, making them excellent for preparing in advance. Once frosted and cut, store the bars in an airtight container at room temperature for up to 3-4 days. If you need them to last longer, you can refrigerate them for up to a week. Just be sure to bring them back to room temperature before serving for the best texture and flavor.
For even longer storage, these cookie bars freeze beautifully. Wrap unfrosted cookie bars tightly in plastic wrap and then aluminum foil, and they can be frozen for up to 2-3 months. Thaw them in the refrigerator overnight, then bring them to room temperature before frosting. You can also freeze frosted bars, though the texture of the frosting might change slightly after thawing. For best results with freezing, I recommend freezing the baked, unfrosted base and making fresh buttercream closer to the serving date.
Other Crowd-Pleasing Dessert Recipes You’ll Love
If you’re a fan of easy, delicious desserts that everyone will adore, here are a few more recipes that are guaranteed hits, perfect for any gathering:
- Brownies for a Crowd
- Irresistible Peanut Butter Bars
- Magnolia Bakery-Style Peanut Butter Banana Pudding

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Frosted Sugar Cookie Bars

The perfect party treat for entertaining a large crowd are these Frosted Sugar Cookie Bars! A deliciously soft sugar cookie, topped with homemade buttercream and sprinkles!
10 minutes
25 minutes
15 minutes
50 minutes
Ingredients
For the Sugar Cookie Bars:
- 1 cup butter, softened
- 2 cups sugar
- 4 large eggs
- 2 teaspoons vanilla
- 4 3/4 cups flour
- 1 teaspoon salt
- 1 teaspoon baking soda
For the Buttercream Frosting:
- 1 cup butter, softened
- 2 Tablespoons milk
- 2 teaspoons vanilla
- 4 cups powdered sugar
- Pink food coloring (optional)
- Sprinkles (optional)
Instructions
Making the Sugar Cookie Base:
- Preheat oven to 350°.
- In a mixing bowl or to a stand mixer with a paddle attachment, cream together the softened butter and sugar. Beat on medium-high speed until the mixture is light and fluffy, about 2-3 minutes.
- Add in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully incorporated.
- In a separate bowl, whisk together the flour, salt, and baking soda. Gradually add these dry ingredients to the wet ingredients, mixing on a low speed until the batter is just combined and a soft dough forms. Be careful not to overmix the dough.
- Grease an 18-inch x 13-inch cookie sheet (or a standard half-sheet pan). Evenly spread the dough into the pan, creating a consistent layer. A helpful tip is to place a piece of parchment paper on top of the dough and use a rolling pin to gently roll it out to the edges for a perfectly smooth surface.
- Bake for 20-25 minutes, or until the edges are lightly golden brown and the center is set and firm to the touch. Do not overbake to ensure the bars remain soft.
- Allow the cookie bars to cool completely in the pan on a wire rack before attempting to frost them. This is crucial for the frosting consistency.
For the Buttercream Frosting:
- In a stand mixer with a paddle attachment (or using a hand mixer in a large bowl), beat together the softened butter, milk, and vanilla extract until smooth and creamy.
- Gradually add the powdered sugar, one cup at a time, beating on a low speed until incorporated. Once all sugar is added, increase the speed to medium-high and beat for 2-3 minutes until the frosting is light, fluffy, and smooth.
- If desired, add a few drops of pink food coloring to the frosting and gently fold it in until you achieve your desired shade of pink. You can use any food coloring you prefer.
- Once the sugar cookie bars are completely cooled, evenly spread the homemade buttercream frosting over the entire surface.
- Immediately top with your favorite sprinkles for a festive finish. Cut the frosted bars into squares or rectangles of your desired size. Enjoy these delightful treats! Store any leftover bars in an airtight container at room temperature for up to 1 week.
Conclusion
Frosted Sugar Cookie Bars truly embody the spirit of effortless entertaining. They offer the classic charm and irresistible flavor of traditional sugar cookies but with the added convenience of baking in a single pan. The soft, buttery cookie base pairs perfectly with the smooth, sweet homemade buttercream, while colorful sprinkles add that festive touch that makes them a visual and culinary delight. Whether you’re hosting a grand celebration or a simple get-together, these bars are adaptable, easy to make, and guaranteed to be a hit with everyone. So, next time you need a dependable, delicious, and crowd-pleasing dessert, reach for this recipe and experience the joy of these perfect Frosted Sugar Cookie Bars!