Multicolor Christmas Tree Cookie Bars for Holiday Baking

Colorful Christmas tree cookies

Technicolor Christmas tree cookie bars — the Studio DIY twist on a classic holiday treat. I like to call these technicolor rainbow unicorn Christmas trees, but feel free to choose your own fun descriptor. Growing up I loved seeing cookie and brownie shapes turned into cute little trees with candy cane trunks, and this version gives that nostalgic idea a colorful modern makeover. Have you tried something like this before?

Colorful cookies and lollipops Colorful Christmas tree cookies

Colorful Christmas tree cookies

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Technicolor Christmas Tree Cookie Bars

Prep Time40 minutes
Cook Time20 minutes
Total Time1 hour
Servings: 10 to 14 bars

Ingredients

  • For the sugar cookie bars:

  • 1/2 cup butter softened
  • 1 17.5 oz package sugar cookie mix
  • 1 egg
  • Bright candy canes about 3 to 5

  • For the buttercream:

  • 1/3 cup butter softened
  • 3 cups powdered sugar
  • 1 1/2 teaspoons vanilla extract
  • 1 to 2 tablespoons milk
  • Gold star sprinkles

Instructions

  • Heat the oven to 350°F and grease the bottom of a 13 by 9-inch baking dish.
  • In a bowl, combine the softened butter, sugar cookie mix, and egg. Mix until a soft dough forms.
  • Press the dough evenly into the bottom of the prepared pan.
  • Bake for about 20 minutes, until the top is lightly browned. Let cool completely.
  • Remove the baked slab from the pan. Cut it in half lengthwise to form two long rectangles, then cut each rectangle into 5 to 7 triangular tree shapes.
  • Break the candy canes into 1-inch pieces and gently insert one piece into the base of each triangle to act as a trunk. Use a dab of frosting to secure them if needed.
  • To make the buttercream, cream the softened butter in the bowl of a stand mixer fitted with the paddle attachment until smooth.
  • Add the powdered sugar and vanilla, mixing until incorporated. Add 1 to 2 tablespoons of milk as needed to reach a light, fluffy texture. Beat on medium for another minute.
  • Divide the frosting into six small bowls and color each with food coloring: bright pink, mint green, bright blue, yellow, orange, and light purple.
  • Spoon small drops of the different colored frostings onto each triangle. With a small offset spatula, lightly smear and blend the colors together to create a tie-dye effect, covering the top completely. A slightly bumpy texture is fine. Chill the cookies in the fridge to set the frosting.
  • Once the frosting has set, lay a piece of plastic wrap directly on top of each frosted cookie and gently press with your fingers to smooth the surface and create a polished technicolor finish.
  • Fill a piping bag fitted with a small round tip with the bright pink frosting and pipe a swag down each tree from top to bottom. Finish by sprinkling gold stars over the trees.
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Colorful Christmas cookies Christmas Tree cookiesColorful Christmas cookies

Photos by Jeff Mindell | Recipe by Theresa Rountree

Those rainbow candy canes really make my heart explode.

I’ll also say it plainly: bars are superior to cookies. My mom always makes chocolate chip bars instead of individual cookies, and I love them — especially if you prefer the soft, gooey center. If you’re an edge person, well, that’s a different debate. (Kidding… mostly.)

p.s. Tie Dye Yule Log Cake inspiration lives on in other holiday treats.