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Frosted Sugar Cookie Bars

Frosted Sugar Cookie Bars are just the thing when you want an easy-to-make dessert that’s sure to please. Top with your favorite sprinkles for birthdays, holidays, and more!

Frosted Sugar Cookie Bars topped with sprinkles

We all love sugar cookies, right? Their simplicity is what appeals to me. I love that a simple combination of ingredients can give you such a great dessert. That’s baking science at its finest!

These Frosted Sugar Cookie Bars take that simplicity even further by changing them from cookies to bars. Instead of doling out individual cookies, the cookie dough is spread in a pan, baked, and then frosted with an equally simple buttercream frosting. You get to skip the cookie scooping in favor of a single pan of sugar cookie deliciousness.

You can bet that these bars are a major crowd favorite. They’re just so tasty and so happy! This is a great recipe to keep in mind when you need an easy, crowd-pleasing dessert for a casual gathering.

Frosted Sugar Cookie Bars topped with colorful sprinkles

What You’ll Need

You’ll only need basic baking ingredients for these sugar cookie bars. Here are some notes about the ingredients, but be sure to see the recipe card below for measurements.

  • All-purpose flour – Measure by weight for best results. If you don’t have a kitchen scale, be sure to use the spoon and sweep method. Too much flour can make your cookie bars dry.
  • Baking powder
  • Salt
  • Unsalted butter – Allow the butter to soften before mixing. It should be soft but still cool. Learn more: How to Soften Butter
  • Granulated sugar
  • Eggs – Bring these to room temperature for easier mixing.
  • Vanilla extract – For something different, try substituting almond extract.

For the frosting:

  • Confectioners’ sugar – This is also called powdered sugar. Sift it for a smooth frosting.
  • Unsalted butter – Soften the butter before mixing.
  • Heavy cream – You can use whole milk instead of heavy cream, but the consistency will be different.
  • Vanilla extract
  • Sprinkles! While you can certainly leave the frosted bars unadorned, I like to top them with sprinkles for a little fun. (The ones in these photos are Bright Skies from Sweetapolita.) Whether you’re celebrating a birthday, Valentine’s Day, Christmas, or just want a sweet treat, you can easily customize the sprinkles to suit the occasion.

These sugar cookie bars are a cinch to make with straightforward instructions. You’ll have these baking in the oven in short order!

Prepare for baking. Heat the oven to 350°F. Grease a 9″ x 13″ x 2″ baking pan. If you like, line the pan with parchment paper and also grease the lining. I recommend a cooking spray with flour, like Baker’s Joy or Pam Baking.

Combine the dry ingredients. Whisk together the flour, baking powder, and salt in a medium bowl.

Combine the wet ingredients. With an electric hand mixer or stand mixer, beat the butter and sugar on medium speed until the mixture is fluffy and lightened in color. Add the eggs one at a time, and mix well after adding each. Mix in the vanilla.

Add the dry ingredients to the wet ingredients. With the mixer on low speed, gradually add the flour mixture. Don’t over-mix; mix just until combined.

Bake. Spread the batter evenly in the prepared baking pan. Place the pan in the heated oven, and bake 20 to 25 minutes. The bars are done when the edges are browned and a pick inserted into the center comes out clean.

Cool. Place the pan on a wire rack, and allow the bars to cool completely before frosting.

To make the frosting:

Mix the ingredients. With an electric mixer on medium speed, beat the sugar and butter until thoroughly combined. Add 3 tablespoons of cream and the vanilla extract. Continue mixing, adding a small amount of cream at a time until the frosting is consistency you like.

Frost the bars. Spread the frosting on top of the cooled bars. Garnish with sprinkles if you like.

Can I Color This Frosting?

Yes! A buttercream frosting like this one is a great candidate for coloring. Just mix your preferred color(s) to the frosting. Paste and gel food colorings are more concentrated than liquid food coloring, so keep that in mind when adding it to your frosting. You can test on a small amount of frosting before mixing the color into the whole batch.

Frosted Sugar Cookie Bars served on colorful plates

Tips for Success

  • Don’t over-mix. Mix the cookie batter just until combined or you may end up with hard, tough cookies.
  • Let the bars cool before frosting. If they’re still warm, the frosting will melt.
  • Shape up! You can cut these bars into squares, bars, or triangles. Make them bigger or smaller if you prefer.
  • Want more frosting? I prefer a thin layer of frosting. Otherwise, I find that they’re a little too sweet for my liking. Feel free to scale the frosting recipe if you’d like a sweeter twist on them.

How to Store

Once cooled, place the cookie bars in an airtight container. They should keep at room temperature up to 2 days. You can also refrigerate them to add a few more days to their shelf life, but just make extra sure the container is airtight. Bring the bars to room temperature before serving.

Can These Sugar Cookie Bars Be Frozen?

Yes! You’ll have the best results storing the cooled cookie bars unfrosted. Place them in a freezer-safe container or zip-top bag. Stored properly, they should keep in the freezer up to 3 months. After thawing, frost the bars and serve.

two Frosted Sugar Cookie Bars on a white and pink plate

Frosted Sugar Cookie Bars

Yield 24 2-inch bars
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes

Frosted Sugar Cookie Bars are just the thing when you need a sure crowd-pleaser!

Frosted Sugar Cookie Bars topped with sprinkles


For the cookie bars:

  • 2 cups (240g) all-purpose flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt
  • 3/4 cup (170g) butter, softened
  • 1 cup (200g) granulated sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract

For the frosting:

  • 2 & 1/2 cups (275g) confectioners’ sugar, sifted
  • 1/2 cup (113g) unsalted butter, softened
  • 3 to 4 tablespoons heavy cream
  • 1/2 teaspoon vanilla extract
  • sprinkles, for garnish


To make the cookie bars:

  1. Preheat oven to 350°F. Grease a 9"x 13" baking pan.
  2. Whisk together the flour, baking powder, and salt. Set aside.
  3. Using an electric mixer on medium speed, beat the butter and sugar until light and fluffy. Add the eggs, one at a time, mixing well after each addition. Mix in the vanilla.
  4. Reduce mixer speed to low. Gradually add the flour mixture, mixing just until combined.
  5. Spread the batter in the prepared pan. (Batter will be thin in the pan.) Bake 20 to 25 minutes or until the edges are browned and a pick inserted into the center comes out clean.
  6. Cool in the pan on a wire rack.

To make the frosting:

  1. Using an electric mixer on medium speed, beat the sugar and butter until thoroughly combined. Add 3 tablespoons cream and the vanilla. Continue beating, adding more cream a small amount at a time, until the frosting is the desired consistency.
  2. Spread the frosting on the cooled bars. If desired, garnish with sprinkles.

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    3 Comments on “Frosted Sugar Cookie Bars”

  1. This looks delicious, and I appreciate all your helpful notes and tips! Bookmarking for this weekend 🙂

  2. made these and they taste great but they turned into cake somehow! i don’t know where i went wrong

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