I love to make these sugar cookie bars anytime a holiday rolls around. They’re truly the perfect dessert for any occasion. They have a delightfully sweet flavor and a plush texture–the perfect cookie-bar hybrid! Topped with creamy frosting, they’re decadent enough for birthdays and holidays. But they’re also super easy to make with just 10 ingredients. These frosted sugar cookie bars are sure to please everyone!

Frosted Sugar Cookie Bars Recipe
My sugar cookie bars are so delicious and so easy to make. They’re like a thicker, chewier version of my favorite soft sugar cookies, with a sweet and creamy vanilla frosting on top. Made with the most basic of baking ingredients, just grab a few things from the pantry and you’re good to go!
I decorated my sugar cookie bars for Valentine’s Day, but they’re easy to jazz up for any holiday. Just swap out the sprinkles and frosting color, and they’ll be ready for any occasion.
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How to Store
Store leftover sugar cookie bars in an airtight container or Ziplock bag at room temperature for up to 3 days, in the refrigerator for up to 5 days, or in the freezer (they freeze best unfrosted) for up to 1 month. Let thaw overnight in the refrigerator before enjoying at room temperature.
Tips for Success
- Use room-temperature butter and eggs for the best results. Cold butter and eggs can cause the dough to turn clumpy.
- Take care not to overmix the dough once the flour has been added. Overmixed dough can lead to dry, dense, or tough cookie bars.
- I used Valentine’s Day-themed sprinkles for mine, but you could easily change the decorations to make them for St. Patrick’s Day, Easter, Halloween, or birthdays.
Sugar Cookie Bars Recipe
Ingredients
For the Bars
- ½ cup unsalted butter room temperature (1 stick)
- ½ cup brown sugar
- ½ cup granulated sugar
- 2 large eggs room temperature
- 2 teaspoons pure vanilla extract
- 2 cups all-purpose flour
- ½ teaspoon baking powder
- ½ teaspoon baking soda
For the Frosting
- ¾ cup unsalted butter room temperature (1½ sticks)
- 2½ cups powdered sugar
- 2 tablespoons milk
- 1 teaspoon pure vanilla extract
- Sprinkles optional, for topping
Equipment
- Kitchen Scale (optional)
- 9×13-inch Baking Pan
- Hand Mixer
Instructions
- Preheat oven to 350°F. Grease a 9×13-inch baking pan with nonstick spray, and place a sheet of parchment paper in the pan.
- In the bowl of a stand mixer fitted with the paddle attachment, cream the butter, brown sugar, and granulated sugar together on medium-high speed until the mixture has become light and fluffy, about 4 minutes.½ cup unsalted butter, ½ cup brown sugar, ½ cup granulated sugar
- Mix in the eggs and vanilla until all the egg is combined.2 large eggs, 2 teaspoons pure vanilla extract
- Slowly add in the flour, baking powder, and baking soda until all ingredients are incorporated2 cups all-purpose flour, ½ teaspoon baking powder, ½ teaspoon baking soda
- Spread the mixture into the prepared pan. Bake in the preheated oven for 18-22 minutes, or until it’s golden brown. Allow the bars to fully cool.
- While the bars cool, make the frosting: In the bowl of a stand mixer fitted with the whisk attachment, cream the butter for 1 minute on medium speed. Reduced the speed down to low, slowly add in the sugar until all the sugar has been incorporated. Stir in the milk and vanilla. Turn the mixer to medium-high speed and mix for 3 minutes until fluffy.¾ cup unsalted butter, 2½ cups powdered sugar, 1 teaspoon pure vanilla extract, 2 tablespoons milk
- Spread the frosting over the cookie bars and top with the sprinkles.Sprinkles
- Cut the cookie bars into squares.
Notes
How to Make Sugar Cookie Bars Step-by-Step
Cream the Butter and Sugars: Preheat your oven to 350°F, grease a 9×13-inch baking pan with nonstick spray, and place a sheet of parchment paper in the pan. In the bowl of a stand mixer fitted with the paddle attachment, cream ½ cup of unsalted butter, ½ cup of brown sugar, and ½ cup of granulated sugar together on medium-high speed until the mixture has become light and fluffy, about 4 minutes.
Add the Eggs: Mix in 2 large eggs and 2 teaspoons of vanilla extract until all the egg is combined.
Add the Dry Ingredients: Slowly add in 2 cups of all-purpose flour, ½ teaspoon of baking powder, and ½ teaspoon of baking soda until all ingredients are incorporated.
Bake the Bars: Spread the mixture into the prepared pan. Bake in the preheated oven for 18-22 minutes, or until it’s golden brown. Allow the bars to fully cool.
Make the Frosting: In the bowl of a stand mixer fitted with the whisk attachment, cream ¾ cup of unsalted butter for 1 minute on medium speed. Reduced the speed down to low, and slowly add in 2½ cups of powdered sugar until all the sugar has been incorporated. Stir in 2 tablespoons of milk and 1 teaspoon of vanilla extract. Turn the mixer to medium-high speed and mix for 3 minutes until fluffy.
Frost the Bars: Spread the frosting over the sugar cookie bars and top with sprinkles if desired. Cut the cookie bars into squares before serving.
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