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Frosted Sugar Cookie Bars decorated for Christmas on parchment paper
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5 from 5 votes

Frosted Sugar Cookie Bars

My Frosted Sugar Cookie Bars are soft, buttery and topped with creamy frosting and sprinkles—an easy, festive twist on classic sugar cookies.
Prep Time5 minutes
Cook Time20 minutes
Chill Time20 minutes
Total Time45 minutes
Course: 60 Minutes or Less, Christmas Recipes, Desserts
Cuisine: American
Keyword: 60-Minutes or Less, Cookie Bars, Cookies, Desserts, Frosting, Sugar Cookies
Servings: 16
Calories: 253kcal
Author: Eva Filer

Equipment

  • Stand Mixer with Paddle Attachment
  • Measuring Cups and Spoons
  • 8x8 Metal Pan
  • Parchment Paper
  • Offset Spatula

Ingredients

COOKIE BARS:

  • 187.5 grams all-purpose flour about 1 ½ cups
  • ½ teaspoon sea salt
  • ½ teaspoon baking powder
  • 200 grams granulated sugar about 1 cup
  • 1 stick butter, unsalted melted
  • 1 large egg yolk
  • ½ tablespoon pure vanilla extract

FROSTING:

  • 230 grams icing sugar about 2 cups
  • 1 stick butter, salted softened (or unsalted)
  • 1 tablespoon whole milk
  • spinkles optional

Instructions

  • Preheat oven to 325F and line an 8x8 metal baking pan with parchment paper leaving the sides high to pull out easier once baked.
  • In a medium bowl whisk together all-purpose flour, sea salt and baking powder. Set aside.
  • Using a stand mixer, mix sugar and melted butter on low speed to combine.
  • Add in egg yolk and pure vanilla. Mix again on low for about 30 seconds, scrape down the sides as you go.
  • Transfer dry ingredients and run on low until the dough is fully combined (about 60 seconds). Again, scrape down the sides as needed.
  • With an offset spatula (or metal spoon) flatten cookie dough into prepared pan.
  • Bake for about 20 minutes, the edges should look set and a will toothpick come out of the center with moist crumbs.
  • Cool on a wire rack fully then start your frosting.
  • Combine icing sugar, butter and milk in the bowl of a stand mixer until smooth using the paddle attachment (about 2-3 minutes).
  • Place dollops of frosting over cooled bars (I prefer to do this in the pan for cleaner edges), then add any sprinkles if desired.
  • Slice and serve or chill for cleaner cuts.

Notes

  • For a bright white icing add drops of purple food coloring (I use 8 drops of a gel food coloring). Always start with less and add 2 drops at a time. If it starts to look gray, you went too far, but you can add more icing sugar to brighten it back up!
  • Begin on low speed using the paddle attachment to gently combine the dry ingredients. Mix for about 60 seconds, just until everything is evenly blended.
  • Use a rubber spatula to clean the sides of the bowl and keep the batter consistent.
  • Spread the cookie dough evenly in your prepared pan for uniform baking and thickness.
  • Wait until the bars are fully cooled before frosting for the best results and smooth application.

Nutrition

Calories: 253kcal | Carbohydrates: 36g | Protein: 2g | Fat: 12g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.5g | Cholesterol: 42mg | Sodium: 178mg | Potassium: 20mg | Fiber: 0.3g | Sugar: 27g | Vitamin A: 370IU | Calcium: 15mg | Iron: 1mg
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