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Unicorn Cookie Bars are soft, gooey and chewy cookie bars packed full of sprinkles, M&Ms and chocolate chips topped with a funfetti buttercream. #unicorncookiebars #rainbowbuttercream #cookiebars #funfetticookiebars #funfetticookies #m&mcookiebars
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5 from 1 vote

Unicorn Cookie Bars

Soft, gooey and chewy cookie bars packed full of sprinkles, M&Ms and chocolate chips topped with a funfetti buttercream dyed a few colours just to make these really unicorn like.
Prep Time20 minutes
Cook Time20 minutes
Total Time40 minutes
Course: Dessert, Snack
Cuisine: American
Servings: 12 Pieces
Calories: 355kcal
Author: Emma Burton

Ingredients

  • ½ Cup Butter, Softened (110g)
  • ½ Cup Brown Sugar (90g)
  • 3 Tbsp. Icing Sugar (25g)
  • 1 teaspoon Vanilla Extract
  • 1 Large Egg
  • 1 and ¼ Cup All-Purpose Flour (155g)
  • 2 Tbsp. Cornflour (15g)
  • ½ teaspoon Baking Soda
  • ¼ Cup Sprinkles (40g)
  • ½ Cup M&Ms (120g)
  • ¼ Cup Chocolate Chips (45g)

Buttercream;

  • ½ Cup Butter, Softened (110g)
  • 1 and ½ Cups Icing Sugar (185g)
  • 1 teaspoon Vanilla Extract
  • 1-2 Tbsp. Milk, more or less as needed
  • Red Gel Food Colouring
  • Blue Gel Food Colouring
  • ¼ Cup Sprinkles (40g)
Metric - US Conventional

Instructions

  • Preheat the oven to 180°C (350°F) and line an 8"x8" baking pan with baking paper.
  • Beat the butter, brown sugar and icing sugar together.
  • Beat in the egg and vanilla extract.
  • Add in the flour, cornflour, baking soda, sprinkles, M&Ms and chocolate chips and beat together.
  • Pour into the prepared pan and bake for around 20 minutes. The top and sides should be golden and the middle will be slightly wobbly for the goo factor.
  • Allow the slcie to cool completely before icing with the buttercream.
  • For the buttercream;
  • Beat the butter until smooth.
  • Add in the icing sugar and vanilla essence and beat.
  • Add in one tablespoon of milk and beat.
  • Add more milk if the buttercream won't come together or is too stiff.
  • You want a spreadable but not runny consistency.
  • Separate the buttercream into two bowls.
  • To one bowl add a touch of red food colouring and to the other add the blue.
  • Start with a touch and mix the colouring through and add more until you have the colour you desire.
  • Place a dollop of each colour randomly around the slice and then lightly spread in an even layer. The colours may overlap in places turning patches purple.
  • Cover with sprinkles and then slice and serve.

Nutrition

Serving: 1Piece | Calories: 355kcal | Carbohydrates: 49g | Protein: 2g | Fat: 17g | Saturated Fat: 11g | Cholesterol: 57mg | Sodium: 173mg | Potassium: 36mg | Fiber: 1g | Sugar: 36g | Vitamin A: 31IU | Calcium: 21mg | Iron: 1mg