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Updated on March 12, 2020 by Liz Marek · This post may contain affiliate links · 6 Comments

Electric Rainbow Fondant Recipe

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Recipe

Rainbow Fondant

Electric Rainbow Fondant Recipe

Looking to get a vivid rainbow of fondant colors? Look no further! This recipe will get you those electric Lisa Frank colors you're looking for!
Print Recipe Rate Recipe
Prep Time: 20 minutes minutes
Cook Time: 10 minutes minutes
Total Time: 30 minutes minutes
Course: Dessert
Cuisine: American
Servings: 10 lbs
Calories: 1763kcal
Author: Liz Marek

Ingredients

  • 6 lbs Powdered sugar sifted
  • 3 lb Mini marshmallows (Hy-Top, Walmart, Haribo brand if you can find it. Jet-Puff, Kraft or Marshmallow Fluff will not work) Make sure you get 1 lb or weight out 1 lb from 2 bags.
  • 1 ½ tablespoon Water (or 1 if it's really humid in your area)
  • 1 ½ cups Shortening or Trex
  • 1 ¼ lbs Wilton Fondant (if you buy the 5lb box, use ½ of one of the packages, if you buy the 1 ½ box, use the whole package)
  • Extra Powdered sugar for kneading

Instructions

Yellow Fondant

  • Melt 1lb marshmallows in microwave, cooking for 1 minute, then mixing, then 40 seconds, then mix, then 30 seconds, until marshmallows are melted together.
  • Add 1 ½ tablespoon water to release marshmallows from bowl.
  • Place ½ cup shortening in mixing bowl.
  • Add marshmallows to mixing bowl and attach hook attachment to mixer.
  • Add in food coloring (1 teaspoon Electric Yellow food color gel).
  • Slowly add in 2lbs powdered sugar while mixing. Reserve about 1 cup of powdered sugar for later.
  • Mix on low until smooth and fondant sticks to the sides of the bowl (about 3 minutes).
  • Add in remaining 1 cup of powdered sugar and mix.
  • Wear gloves or put shortening on your hands to help get the fondant out of the mixing bowl and onto the table.
  • Add in 1 ¼ lbs of premade Wilton fondant and knead. Pull like taffy until smooth. Divide fondant in half.

Orange Fondant

  • Using ½ of the divided yellow fondant, add in approximately ½ teaspoon Orange food color gel.
  • Pull fondant like taffy until smooth. Add more powdered sugar if it's too sticky.

Pink Fondant

  • Melt 1lb marshmallows in microwave, cooking for 1 minute, then mixing, then 40 seconds, then mix, then 30 seconds, until marshmallows are melted together.
  • Add 1 ½ tablespoon water to release marshmallows from bowl.
  • Place ½ cup shortening in mixing bowl.
  • Add marshmallows to mixing bowl and attach hook attachment to mixer.
  • Add in food coloring (1 teaspoon Electric Pink food color gel).
  • Slowly add in 2lbs powdered sugar while mixing. Reserve about 1 cup of powdered sugar for later.
  • Mix on low until smooth and fondant sticks to the sides of the bowl (about 3 minutes).
  • Add in remaining 1 cup of powdered sugar and mix.
  • Wear gloves or put shortening on your hands to help get the fondant out of the mixing bowl and onto the table.
  • Add in 1 ¼ lbs of premade Wilton fondant and knead. Pull like taffy until smooth. Divide fondant in half.

Purple Fondant

  • Using ½ of the divided pink fondant, add in approximately ½ teaspoon Electric Purple food color gel (Optionally add ½ teaspoon Regal Purple for darker purple).
  • Pull fondant like taffy until smooth. Add more powdered sugar if it's too sticky.

Blue Fondant

  • Melt 1lb marshmallows in microwave, cooking for 1 minute, then mixing, then 40 seconds, then mix, then 30 seconds, until marshmallows are melted together.
  • Add 1 ½ tablespoon water to release marshmallows from bowl.
  • Place ½ cup shortening in mixing bowl.
  • Add marshmallows to mixing bowl and attach hook attachment to mixer.
  • Slowly add in 2lbs powdered sugar while mixing. Reserve about 1 cup of powdered sugar for later.
  • Mix on low until smooth and fondant sticks to the sides of the bowl (about 3 minutes).
  • Add in remaining 1 cup of powdered sugar and mix.
  • Wear gloves or put shortening on your hands to help get the fondant out of the mixing bowl and onto the table.
  • Add in 1 ¼ lbs of premade Wilton fondant and knead. Pull like taffy until smooth. Divide fondant in half.
  • Add 1 teaspoon Electric Blue and knead into fondant until color is fully incorporated.

Green Fondant.

  • Using ½ of the divided white fondant, add in approximately 1 teaspoon Electric Green food color gel (Optionally add ¼ teaspoon yellow for a more vibrant green).
  • Knead into fondant until color is fully incorporated.

Video

Notes

How to make a rainbow of fondant colors!

Nutrition

Serving: 1g | Calories: 1763kcal | Carbohydrates: 382g | Protein: 2g | Fat: 31g | Saturated Fat: 7g | Sodium: 115mg | Potassium: 12mg | Sugar: 344g | Calcium: 7mg | Iron: 0.5mg
Tried this recipe?Let us know how it was!

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About Liz Marek

Liz Marek is a professional cake artist, sweet and savory recipe developer, and the founder of Sugar Geek Show, where she teaches cooking, baking and cake decorating through detailed tutorials, food science explanations, and kitchen-tested recipes. She has been creating recipes and teaching baking techniques since 2008, helping bakers of all skill levels gain the confidence to make professional-quality desserts at home.

Liz is known for breaking down complex cooking and baking concepts into simple, approachable methods. Her work focuses on helping people understand not just how a recipe works, but why it works. Through Sugar Geek Show, she shares step-by-step recipes, cake decorating tutorials, and practical baking guides designed to make professional techniques accessible to everyone.

Over the years, Liz has taught thousands of students through online tutorials, classes, and educational content focused on real kitchen results. Her recipes are carefully tested and written to help people succeed the first time they make them.

When she’s not developing recipes or teaching baking techniques, Liz also hosts curated travel experiences for women through her travel brand Soul Sisters.

You can find Liz’s latest recipes, baking tutorials, and food science tips at Sugar Geek Show.

Reader Interactions

Comments

  1. Paula says

    November 07, 2018 at 9:15 am

    Can marshmallow fluff be used instead of marshmallows in this recipe? I don't eat lard and marshmallows have lard in them, marshmallow fluff doesn't have lard. Thank you!

    Reply
    • The Sugar Geek Show says

      November 07, 2018 at 10:16 am

      Yes it can but you'll need to follow the DKF recipe for kosher fondant http://artisancakecompany.com/2014/10/kosher-marshmallow-fondant-recipe/

      Reply
  2. Stephanie says

    August 29, 2018 at 1:29 pm

    5 stars
    Thank you! I always have such a hard time with red though - and I need to make a Lego cake for my son! =/ Any ideas?

    Reply
    • The Sugar Geek Show says

      September 01, 2018 at 9:42 pm

      Same exact process but use red food coloring 🙂

      Reply
  3. Nahid A says

    July 25, 2018 at 7:31 pm

    5 stars
    Thank you so much for wonderful tutorials I loved the details especially on how to upscale size on the wolf Cake amazing

    Reply
    • The Sugar Geek Show says

      July 27, 2018 at 8:55 am

      Yay I'm so glad!

      Reply
5 from 2 votes

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Hi, I'm Liz! I'm passionate about creating reliable, foolproof recipes that don't just tell you how to cook, but why things work - so you can skip the guesswork and confidently make the best sweet and savory dishes of your life.

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