There’s something undeniably nostalgic about biting into a perfectly frosted sugar cookie bar, especially when they are buttery, soft, and topped generously with colorful sprinkles. These Frosted Sugar Cookie Bars are a delightful and convenient twist on the classic sugar cookie recipe, bringing ease to baking with rich flavors that linger. Whether you’re hosting a party or simply craving a sweet delight on a cozy afternoon, these cookie bars make for an irresistible treat.
As I was growing up, weekends at my grandmother’s house were always punctuated with a batch of freshly baked sugar cookies. The aroma wafted through the house, and we all raced to snag the first cookie off the tray. It wasn’t just the taste that was memorable, but the laughter and stories shared over these sugary delights. These cookie bars bring back those cherished memories but with a modern twist, offering the same joy and flavor without the detailed decorating time.
Why You’ll Love This Recipe
These Frosted Sugar Cookie Bars are incredibly easy to make, eliminating the need to roll out individual cookies. You simply press the dough into a pan, bake, and then frost. The bars are perfect for any occasion, whether you’re whipping up a quick dessert for an unexpected gathering or planning a festive celebration. They have the classic vanilla and buttery flavor of traditional sugar cookies, but with added convenience and a texture that’s delightfully soft and chewy.
Ingredients Notes
The key to sublime cookie bars lies in quality ingredients. Use real unsalted butter for a rich, creamy texture and pure vanilla extract for that authentic flavor. If you’re out of vanilla, almond extract works as a charming substitute. For the frosting, a combination of powdered sugar and heavy cream yields a smooth, rich finish. To make the treat festive, consider adding colored sprinkles, especially around the holiday season.
Recipe Steps
Step 1
Preheat your oven to 350°F (175°C). Line an 8×8 inch pan with parchment paper, allowing excess to hang over the edges for easy removal later.
Step 2
In a large mixing bowl, cream together the butter and sugar until light and fluffy. This typically takes about 3-5 minutes using an electric mixer at medium speed.
Step 3
Add in the egg and vanilla extract, beating until fully combined. Gradually mix in the flour and baking powder to form a soft dough.
Step 4
Press the dough evenly into the prepared baking pan. Bake in the preheated oven for 20-25 minutes, until the edges are golden and the center is set.
Step 5
While cooling, prepare your frosting by mixing powdered sugar, butter, heavy cream, and vanilla extract. Once cooled, spread the frosting evenly over the bars and top with sprinkles.
Storage Options
To keep your cookie bars fresh, store them in an airtight container at room temperature for up to five days. For longer storage, freeze the bars in a single layer and, when frozen, transfer them to a resealable freezer bag for up to three months. Allow the bars to thaw at room temperature before serving or, if you prefer them warm, microwave them for a few seconds each.
Variations & Substitutions
For a citrus twist, add a teaspoon of lemon zest to the dough. If dietary restrictions are a concern, substitute almond flour for a gluten-free option. Try stirring in some mini chocolate chips for an added gush of sweetness. Experiment with different frosting colors and sprinkles to suit seasonal festivities or personal preference.
Serving Suggestions
These cookie bars are perfect for serving at birthday parties, family gatherings, or even as a lunchbox treat. Pair these with a cold glass of milk or a hot cup of coffee or tea to enhance their deliciousness. Their vibrant look is sure to become a centerpiece on your dessert table.
Frequently Asked Questions
Can I double the recipe?
Absolutely! To double the recipe, use a 9×13 inch baking dish. Be mindful to slightly increase the baking time to ensure the larger batch cooks thoroughly, checking with a toothpick for doneness.
How do I prevent the frosting from becoming too runny?
If your frosting turns out too runny, add more powdered sugar a tablespoon at a time until the desired consistency is reached. Chilling the frosting briefly before spreading can also firm it up.
What types of toppings can I use?
Feel free to get creative with your toppings. Aside from traditional sprinkles, try shredded coconut, colored sugar crystals, or even miniature candies. Different toppings can bring varied textures and flavors to the bars.

Frosted Sugar Cookie Bars
Ingredients
Main Ingredients
- 2.5 cups all-purpose flour
- 1 cup unsalted butter softened
- 1.5 cups granulated sugar
- 2 tablespoons vanilla extract
- 1 teaspoon baking powder
- 0.5 teaspoon salt
- 3 large eggs
- 1 cup powdered sugar for frosting
Instructions
Preparation Steps
- Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking pan.
- In a medium bowl, whisk together flour, baking powder, and salt.
- In a large bowl, beat butter and granulated sugar until fluffy. Add eggs one at a time, then add vanilla extract.
- Gradually add the dry ingredients into the wet ingredients. Mix until just combined.
- Spread the batter evenly into the prepared pan. Bake for 15 minutes or until the edges are lightly golden.
- Let the bars cool completely before frosting with powdered sugar mixed with a little water to desired consistency.