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If you love the flavor of classic sugar cookies but want to skip the rolling and cutting, these sugar cookie bars are the ultimate solution. This recipe produces a super thick, soft, and chewy bar that stays moist for days. It is the perfect easy dessert for potlucks, birthdays, or holiday parties where you need to feed a crowd without the extra work of individual cookies.

If I could pick only one cookie to eat for the rest of my life, it would be sugar cookies. Whether they’re drop sugar cookies or cutout sugar cookies, I love them, with or without frosting.
These frosted sugar cookie bars are a cross between a traditional cookie and a soft blondie. By using cream of tartar and baking soda, you get those perfect chewy edges and a soft, pillowy center that melts in your mouth. Topped with a thick layer of creamy vanilla buttercream and plenty of sprinkles, they taste better than Lofthouse cookies but are much simpler to make at home.

Sugar Cookie Bar Ingredients
- I always use unsalted butter that’s been softened, but if you need to substitute salted butter just reduce the salt in the recipe to 1/4 teaspoon.
- Baking Soda and Cream of Tartar: The combination is the SECRET ingredient that keeps the bars SOFT! When baking soda and cream of tartar are used together, it creates a rapid chemical leavening reaction that produces carbon dioxide, causing a quick rise and tender, puffy texture and soft cookie bars.
- Extracts: Vanilla is important and should not be omitted, but if you want an even better tasting sugar cookie, add a bit of almond extract to your dough.
Click to see the recipe card below for full ingredients & instructions. See below the recipe card for even more information: process shots, variations, FAQ and more.
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Cookie Bar Tips
- Using room temperature butter and eggs is essential for proper aeration. This creates a uniform crumb structure that prevents the bars from becoming too dense or oily.
- For the softest sugar cookie bars do not overbake the dough. The edges should be just barely golden while the center still looks slightly underdone because they will continue to firm up as they cool in the pan.
- You can use milk in the frosting, but the heavy whipping cream makes a silky and delicious frosting recipe.
- To get clean slices when cutting frosted bars let the frosting crust for at least thirty minutes and use a sharp knife wiped clean between every cut.
Sugar Cookie Bars Recipe

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Ingredients
Cookies:
- ¾ cup (170g) unsalted butter, softened
- ¾ cup (150g) granulated sugar
- 1 egg
- 1 teaspoon vanilla extract
- ½ teaspoon almond extract, optional
- ½ teaspoon baking soda
- ½ teaspoon cream of tartar
- ½ teaspoon salt
- 2 cups (248g) all purpose flour
Frosting:
- ½ cup (113g) unsalted butter, softened
- ¼ teaspoon salt
- 3 cups (339g) powdered sugar
- 1 teaspoon vanilla extract
- 1-3 tablespoons (5-15ml) milk or heavy whipping cream
- Sprinkles and/or food coloring, if desired
Instructions
- Preheat oven to 350°F. Line a 9×13-inch pan with foil and spray with nonstick cooking spray.
- Cream butter and sugar in the bowl of a stand mixer fitted with the paddle attachment. Beat in egg and both extracts. (Almond extract is optional, but adds amazing flavor!) Mix in baking soda, cream of tartar, and salt. Slowly mix in flour.
- Press dough into prepared pan.
- Bake for 14-19 minutes The sides will just be getting golden and the center will look a little under done. Cool completely before frosting.
- Make the frosting: Beat butter until creamy with a hand or a stand mixer. Mix in salt. Slowly add in powdered sugar until mixture is crumbly. (It will be very crumbly if using a hand mixer, more smooth if using a stand mixer.) Add vanilla and 1 tablespoon milk or cream. Mix until the frosting comes together and becomes smooth, adding additional teaspoons of milk as needed for consistency. If you want your frosting to be a color, tint it now.
Notes
- Decorate these for any holiday with any color sprinkles.
- These are done when they just lose their glossy sheen. That keeps them soft!
- Bake these in a metal pan for best results.
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Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
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How to Make Sugar Cookie Bars
- Be sure to cream the butter and granulated sugar until fluffy. This will take 1-3 minutes depending on if you’re using a hand mixer or a stand mixer.
- Only mix in egg and extracts once the butter is creamed.
- You can mix the baking soda and cream of tartar in with the flour first and whisk them or mix them in individually.
- Always bake cookie bars in a metal pan for best results. Using foil or parchment paper makes for easy removal.
- While they’re baking and cooling, make the buttercream frosting recipe. You can tint the sugar cookie frosting any color you want using food coloring, and I love the look of sprinkles.
FAQs
Dry bars are usually the result of over-measuring the flour or overbaking. Be sure to spoon and level your flour and pull the bars from the oven as soon as the edges are set.
The bars are done when the edges are a very light golden brown and the center no longer looks wet or jiggly. A toothpick inserted into the center should come out with just a few moist crumbs.
This recipe is optimized for a 9×13 pan. If you use a smaller pan the bars will be much thicker and require a significantly longer baking time.








WOW!!! I just made this cookie bar and served it for my grandson’s birthday because he loves sugar cookies but not cake. It was fun and festive for this occasion. The BEST part yet is that I substituted the flour with Bob’s Red Mill 1 for 1 gluten free baking flour and it was awesome. My daughter-in-law was so excited, loved the cookie and said she hasn’t had sugar cookies for the last three years since she has a gluten sensitivity. Thank you for sharing this recipe.
PS – I debated using the amount of vanilla the recipe called for in the bar and icing but I took the leap and followed the recipe. Lol
Lindsay. Thank you. I made these tonight to ship to my son for his 18th birthday. Although it is the hear of the summer I am sending the frosting for dipping, in its own container. Sprinkles too. Sugar cookies are his favorite, and I sm sure these will be the new go to bars.
My response to these is: YES PLEASE. Bars like this are one of those treats I can’t resist!
Lindsay would never turn down one of these bars! I am SO happy that blogging has brought us all together. Thank you for helping me celebrate!
I’m so in love with these!!
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