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Easy Cake Decorating to Make Any Occasion Magical

In front of me sits a blank white cake and enough rainbow candies to fill an Olympic size ball pit.

The white frosting glaring back at me is like a blank canvas demanding a paint brush.

I’ve never decorated a cake before, so this could go down the road of magical or take a flying leap into the realm of a mess.

Thankfully, Celebration by Frey products make this a fun and easy cake decorating operation. 

I participated in Mom Blog Tour Sweets & Snacks Expo on behalf of Wendy’s Bloggers.

I received Celebration by Frey products to facilitate my post, but my opinion and creative content are my own.

rainbow cake decorating made easy

Fun & Easy Cake Decorating

First, I highly encourage you to visit the Celebration by Frey website. You can shop by color, event, or candy type and stock up on any color scheme for seriously any occasion

To make things super easy on yourself, you can purchase a blank cake at your local grocery store.

Of course, you can make your own as well, but I’ll do anything for a shortcut now that the kids and I have schedules that make us all dizzy on a daily basis.

Blank canvas... I mean cake

So, snag a white cake and have some fun. Let the kids get in on the action and make this a new tradition for all your cake-requiring events.

Rainbow Crumbs Celebration Cake

Easy cake decorating - Magical Rainbow cake with Sixlets

It’s helpful to separate and sort all your candies into bowls by colors for ease of designing. If you were using paint and a brush, this would be your palette.

Start designing! We went with a Rainbow Crumbs theme because of our logo and blog theme.

We really are A Magical Mess! Our unicorn logo is eating his rainbow and leaving a trail of crumbs, so this cake fits his style perfectly!

Easy cake decorating with rainbow Sixlets
Yield: 12 people

Rainbow Crumbs Celebration Cake

Super easy cake decorating for a magical event!

Make any occasion magical with this colorful cake! 

Prep Time 15 minutes
Total Time 15 minutes


  • 1 9 inch round prepared frosted cake, white
  • 1/3 cup Celebration by Frey Sixlets, red
  • 1/3 cup Celebration by Frey Sixlets, orange
  • 1/3 cup Celebration by Frey Sixlets, yellow
  • 1/3 cup Celebration by Frey Sixlets, green
  • 1/3 cup Celebration by Frey Sixlets, blue
  • 1/3 cup Celebration by Frey Sixlets, indigo
  • 1/3 cup Celebration by Frey Sixlets, violet
  • 1/4 cup Celebration by Frey Sweet Shapes Stars


  1. Place your cake on a decorative serving dish or board.
  2. Starting with the red Sixlets, arrange one row in preferred rainbow shape on the top of the cake. I did an 'S' shape, but you could do a zig-zag or the traditional arch. Press each Sixlets into the frosting lightly so they stay in place.
  3. Following the line of the red Sixlets, repeat with remaining colors in the ROYGBIV order--red, orange, yellow, green, blue, indigo, violet.
  4. Use the remaining Sixlets to decorate the base of the cake. Create a rainbow pattern with individual candies in a row or make color blocks as shown.
  5. Press a few Sweet Shapes stars into the side of the cake where the rainbow ends.
  6. Refrigerate until ready to eat.

Nutrition Information:



Serving Size:

1 slice

Amount Per Serving: Calories: 29Total Fat: 1gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 1gCholesterol: 4mgSodium: 15mgCarbohydrates: 5gFiber: 0gSugar: 4gProtein: 0g

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Super easy cake decorating for a magical event!

The creative ideas for colored candies are endless. If you have a kids’ party, consider putting together a candy buffet using clear paint buckets. Before the kids eat, they can create a piece of art.

Give them each a plate with a lip and teach them to paint with the colored candies in a paint-by-numbers fashion. I threw together this slightly terrifying unicorn in a cookie sheet as an example.

Unicorn food art with rainbow

Don’t let that moderately hideous creation scare you; there are so many cute ways to implement this activity.

You could even print little templates for flowers, fish, or anything to follow your party theme. Kids and adults will love it!

Quick and easy cake decorating - rainbow cake idea
How to easily decorate a cake to make any occasion magical in under 15 minutes!

If you’re looking for more rainbow treats, try rainbow cookie dough and rainbow Jello cups!

Have you ever decorated a cake this way?

Who would love this rainbow cake?


Tuesday 5th of March 2019

This is such a beautiful cake!

Arianna Frasca

Thursday 4th of October 2018

My daughter sees your cake, and now she wants that one for her birthday!!! I will do it, it's super cute, and it's an easy decoration you can do with a child too! Thank you for sharing!


Thursday 4th of October 2018

That's so awesome! Please let us know how it turns out!! :)

T.M. Brown

Saturday 22nd of September 2018

I've always wanted to learn how to decorate cakes. This one looks so decorative and festive - so many colors! Great job!


Saturday 22nd of September 2018

I love everything about this cake. I am going to have to show this to my girls. So much fun!


Friday 14th of September 2018

I am obsessed! I never would have thought to do this myself. It came out super cute!

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