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    Home » Recipes » Dessert » Bars + Brownie Recipes » Funfetti Frosted Sugar Cookie Bars

    Published: Jul 28, 2020 by Kristen Massad · This post may contain affiliate links · 3 Comments

    Funfetti Frosted Sugar Cookie Bars

    Jump to Recipe - Print Recipe

    Ready for any celebration, Funfetti Frosted Sugar Cookie Bars are super soft, loaded with sprinkles, and topped with the creamiest Buttercream Frosting.

    Sugar cookie bars with a star shaped candle burning in one

    Sugar cookies can come in so many shapes and sizes and have the best classic flavor that brings us back to all our childhood celebrations. Most sugar cookies are made to be scooped or rolled out and cut into shapes. They can be enjoyed plain or can be decorated with royal icing or buttercream frosting. 

    There are so many ways to love a sugar cookie, including these Funfetti Sugar Cookies, but I have discovered my true love for Sugar Cookie Bars. These keep things simple, serve a crowd without all the time of individually scooping or cutting out shapes. These Sugar Cookie Bars are made with one batter spread into a square cake pan, baked and frosted with my all-time favorite Buttercream Frosting. The rich and classic Buttercream complements the Sugar Cookie Bars perfectly and takes them to the next level. Rainbow sprinkles are a great addition to make these festive and fun for any celebration!  

    Ingredients

    Ingredients for Sugar Cookie bars laid out
    • Butter- Unsalted will be needed for both the bars and the frosting
    • Sugar- Granulated for the bars and powdered for the frosting
    • Flavoring- Vanilla and almond extract will give the bars their beautiful flavor
    • Flour- All-purpose
    • Leavening Agents- Baking powder and baking soda will give the bars the perfect rise
    • Sprinkles- Rainbow sprinkles for the fun, colorful look!
    • Shortening- Vegetable shortening to add stability to the frosting

    Directions

    Sugar cookie bars covered in rainbow sprinkles next to a bowl of buttercream frosting
    • Preheat oven to 350 degrees F and prepare a 9x9 inch square cake pan with parchment paper
    • In a medium bowl combine the flour, salt, baking powder and baking soda; set aside
    • In a mixing bowl with the paddle attachment, cream together the unsalted butter and granulated sugar until smooth and fluffy
    • Add in the egg and egg yolk to the creamed butter and sugar and mix until fully combined
    • On low speed, slowly add in the dry ingredients to the butter mixture until fully combined
    • Just before the cookie batter is finished mixing, add the sprinkles into the batter and mix on low speed until sprinkles are mixed throughout the batter
    • Remove the bowl from the electric mixer and scrape the sugar cookie batter into the prepared square cake pan
    • Press the sugar cookie batter into the pan until it is spread evenly
    • Bake the Sugar Cookie Bars for 14-16 minutes or until the top of the cookie has a very light golden edge
    • Remove the Sugar Cookie Bars from the oven and allow them to cool completely before removing them from the pan
    • While you are waiting for the Sugar Cookie Bars to cool, prepare the Buttercream Frosting

    Making Classic Buttercream Frosting

    The block of baked sugar cookie bars before being cut into squares
    • In a mixing bowl with the paddle attachment, cream together the unsalted butter and vegetable shortening until creamy
    • Add the vanilla extract into the butter mixture
    • Slowly add the powdered sugar into the butter mixture, one cup at a time until fully combined
    • Mix the Buttercream Frosting on medium to high for 3-4 minutes until the buttercream is light, fluffy and smooth
    • Remove the buttercream frosting from the mixing bowl and store in an airtight container until ready to use
    • Once the Sugar Cookie Bars are cooled, remove the bars from the pan and spread the Buttercream Frosting to cover the top of the bars
    • Garnish with rainbow sprinkles
    • For a clean cut, refrigerate the bars for 5 minutes to allow the Buttercream Frosting to set
    • Cut the Sugar Cookie Bars, serve and enjoy!
    Frosted sugar cookie bars topped with rainbow sprinkles

    What Is The Difference Between Sugar Cookies and Shortbread Cookies
    When I am making shaped and decorated cookies, my go-to is my famous Shortbread Cookie Recipe that I have made for so many years.  They are super buttery, not overly sweet and glazed with smooth royal icing, and very different than a Sugar Cookie. Shortbread is typically made with sugar, flour, butter, and an egg keeping the flavor simple and focusing on the butter. Sugar Cookies bring back memories of childhood and I love the classic sugar cookie made into bars topped with a delicious Buttercream Frosting. Sugar cookies have less butter than a traditional shortbread cookie, they are made with baking powder and baking soda for a more cake-like texture and this recipe is made with a dash of almond extract.

    Close up of a sugar cookie bar with rainbow sprinkles on top

    Tips and FAQs for Sugar Cookie Bars

    • Make sure all the frosting ingredients are room temperature so that everything combines perfectly.
    • If you're not serving the sugar cookie bars immediately, store them in an airtight container.
    • These bars can be stored for 2-3 days.
    Can I add color the buttercream frosting?

    Yes, this is a great way to add another colorful touch to the sugar cookie bars! Add whatever food coloring you want until you get the desired color.

    Can I make the frosting ahead of time?

    Yes you can absolutely make the frosting in advance to save some time! Just refrigerate it until about 30 minutes before you need to use it so it can soften up.

    More Recipes You Will Love

    • Soft and Chewy Chocolate Chip Blondies
    • Magic Cookie Bars
    • Easy Easter Chocolate Peanut Butter Bark
    • The Ultimate White Chocolate Pecan Cookies

    Thank you for visiting Joy + Oliver. If you tried this recipe, please leave a 5 Star Review in the recipe card and save all your favorite recipes to Pinterest!

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    Funfetti Frosted Sugar Cookie Bars

    Ready for any celebration, Funfetti Frosted Sugar Cookie Bars are super soft, loaded with sprinkles, and topped with the creamiest Buttercream Frosting.
    5 from 2 votes
    Print Pin Rate
    Course: Bars, Cookies, Dessert
    Cuisine: Dessert, kids
    Prep Time: 15 minutes
    Cook Time: 15 minutes
    Cool Time: 20 minutes
    Total Time: 50 minutes
    Servings: 12 Bars
    Calories: 455kcal
    Author: Kristen Massad

    Ingredients

    Funfetti Sugar Cookie Bars

    • ½ Cup Unsalted Butter
    • 1 Cup Granulated Sugar
    • 1 Whole Egg
    • 1 Egg Yolk
    • 2 teaspoons Vanilla Extract
    • ½ teaspoon Almond Extract
    • 2 Cups All Purpose Flour
    • ½ teaspoon Salt
    • 1 teaspoon Baking Powder
    • ½ teaspoon Baking Soda
    • ½ Cup Rainbow Sprinkles

    Buttercream Frosting

    • 1 Cup 2 sticks Unsalted Butter
    • ¼ Cup Vegetable Shortening
    • 3 Cups Powdered Sugar
    • ½ tsp Vanilla Extract
    • Rainbow Sprinkles for Garnish

    Instructions

    Prepare the Sugar Cookie Bars:

    • Preheat oven to 350 degrees F and prepare a 9x9 inch square cake pan with parchment paper
    • In a medium bowl combine the flour, salt, baking powder and baking soda; set aside
    • In a mixing bowl with a paddle attachment, cream together the unsalted butter and granulated sugar until smooth and fluffy
    • Add in the egg and egg yolk to the creamed butter and sugar and mix until fully combined
    • On low speed, slowly add in the dry ingredients to the butter mixture until fully combined
    • Just before the cookie batter is finished mixing, add the sprinkles into the batter and mix on low speed until sprinkles are mixed throughout the batter
    • Remove the bowl from the electric mixer and scrape the sugar cookie batter into the prepared square cake pan
    • Press the sugar cookie batter into the pan until it is spread evenly
    • Bake the Sugar Cookie Bars for 14-16 minutes or until the top of the cookie has a very light golden edge
    • Remove the Sugar Cookie Bars from the oven and allow them to cool completely before removing them from the pan
    • While you are waiting for the Sugar Cookie Bars to cool, prepare the Buttercream Frosting

    Prepare the Buttercream Frosting:

    • In a mixing bowl with paddle attachment, cream together the unsalted butter and vegetable shortening until creamy
    • Add the vanilla extract into the butter mixture
    • Slowly add the powdered sugar into the butter mixture, one cup at a time until fully combined
    • Mix the Buttercream Frosting on medium to high for 3-4 minutes until the buttercream is light, fluffy and smooth
    • Remove the buttercream frosting from the mixing bowl and store in an airtight container until ready to use
    • Once the Sugar Cookie Bars are cooled, remove the bars from the pan and spread the Buttercream Frosting to cover the top of the bars
    • Garnish with rainbow sprinkles
    • For a straight and easy cut, refrigerate the bars for 5 minutes to allow the Buttercream Frosting to set
    • Cut the Sugar Cookie Bars into desired shape and size, serve and enjoy!
    • If you are not serving immediately, store the bars in an airtight container for 2-3 days 

    Nutrition

    Serving: 1Bar | Calories: 455kcal | Carbohydrates: 47g | Protein: 3g | Fat: 29g | Saturated Fat: 16g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 8g | Trans Fat: 2g | Cholesterol: 91mg | Sodium: 188mg | Potassium: 38mg | Fiber: 1g | Sugar: 31g | Vitamin A: 751IU | Vitamin C: 1mg | Calcium: 34mg | Iron: 1mg
    Tried this Recipe? Pin it for Later!Mention @JoyandOliver or tag #JoyandOliver!

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    Reader Interactions

    Comments

    1. KM says

      March 11, 2022 at 9:38 am

      5 stars
      Such a fun addition to a birthday party and so easy to make!

      Reply
    2. Alison Baker says

      September 28, 2020 at 11:12 am

      Made these for a party to feed the kids dessert. The adults ended up eating and enjoying just as much as the kids did!

      Reply
      • kristen massad says

        September 28, 2020 at 1:57 pm

        Yay! So glad everyone loved them.

        Reply

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