Rainbow Swirl Buttercream Frosting
For my son’s birthday this year I wanted to do something fun and colorful so I got out some food coloring and made some simple chocolate cupcakes with a colorful Rainbow Swirl Buttercream. These rainbow cupcakes were a hit with his pre-school class and the best part? They’re super easy to make!
Rainbow Swirl Buttercream
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I absolutely love this buttercream. It’s so easy to put together, as it’s a simple buttercream frosting recipe, but the easy additions of the food coloring make it pop and adds some flair to any occasion, even if that occasion is a stay at home Saturday night.
For this particular occasion, it was my son’s fourth birthday (oh my gosh how did that happen already?).
My son’s birthday was in the middle of our moving timeline. Since we were moving out of our tiny (inbetweener) rental and into our new home, after much guilt and being hard on myself I decided that we were not going to have a big birthday party this year. That decision was difficult to make, and I felt like a terrible mom. He’s four, he didn’t care, but I wanted to make it up to him. Even updating this post a year later, I still feel bad.
That night we had a nice meal, did presents and celebrated as a family but during the day, I made rainbow cupcakes for him to celebrate with his friends at pre-school.
Naturally, because it was sugar, chocolate, and looked like fairy unicorn cupcakes, they were a hit.
I love the outcome of this rainbow swirl buttercream! I’m really proud of how they turned out and the fact that every cupcake is unique and has its own look is the icing on the cupcake 😉 Sorry, I couldn’t resist.
How to Make Frosting
Here’s a video to show you just how easy it is to make buttercream frosting.
How to Make Rainbow Buttercream Frosting:
The rainbow swirl buttercream frosting is really easy to achieve. The first step is to choose your food coloring, I used pink, blue and yellow. I used the Wilton Gels, you can get them at Bulk Barn, Michaels, Walmart or Amazon.
I divided the frosting into four bowls: 3 for the colored and 1 for the original.
I have seen a lot of people using multiple piping bags in one piping bag or buying a special piping bag. I’m far too lazy for that. I simply tossed it all in the bag (focusing on the sides) and it turned out well.
That’s it. It’s really simple to do.
I mixed a few colored sugars and sprinkled them on top.
To top off the rainbow swirl buttercream, I used Wilton’s Candy Melts and wrote out the number 4 on parchment paper. It hardened up quick and they stayed put. I have done this before with just chocolate but once it got to room temperature they would melt. I suggest using candy melts for that reason.
Rainbow Cupcakes
The recipe I used is a variation of the white chocolate buttercream and the strawberry white chocolate buttercream.
I love the way that this rainbow frosting looks! I call it rainbow, some people call it tie dye icing – what you call it doesn’t really matter. What matters is the end result (and how it tastes of course).
Supplies I used for these cupcakes:
An optional alternative to the tie dye cupcake effect:
Rainbow Swirl Buttercream Frosting
Ingredients:
- 1 cup butter, unsalted and softened
- 3 cups powdered sugar (depending on the humidity/heat that day sometimes I have to add about 1/2 – 1 cup more, play around with it until you reach the consistency you desire)
- 1/4 cup whipping cream
- 1 tsp vanilla extract
- 1 pink food coloring
- 1 blue food coloring
- 1 yellow food coloring
Directions:
- In your mixer add the butter and slowly begin to beat it on a medium setting. Once it’s soft, add the sugar.
- On a slow speed mix until incorporated (and to prevent sugar going everywhere) and then beat until fluffy. This takes a few minutes.
- Scrape the bowl, add the cream and vanilla.
- Turn the beater to high and let it whip up for about five minutes. You may need to pause and scrape the bowl a few times.
- Divide the frosting into four bowls: leave one the original color and then color the three with the colors your chose.
- Spoon the colors into a piping bag, focusing on the sides more so the colors come out at once and pipe!
Nutrition Information
Yield: 24 cupcakes worth, Serving Size: 1
- Amount Per Serving:
- Calories: 172 Calories
- Total Fat: 8.4g
- Saturated Fat: 5.3g
- Cholesterol: 23.1mg
- Sodium: 61.9mg
- Carbohydrates: 25.1g
- Sugar: 25.1g
- Protein: 0.1g
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Disclosure: This post contains affiliate links.
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Looks amazing!
oh how much fun would this be, thanks for sharing 😀 now I must make some cute cupcakes
Wow this looks amazing, I love how bright the colors are!
Thank you Valerie!
I’m worried that when I do it, it’ll look brown! Yours looks gorgeous!
It won’t, I promise! Give it a try 😀
What a fun and creative idea, I especially love your photography! Definitely a must pin 🙂 have a great day! Xo
Thank you Jess! Have a great day.
These are so pretty! I must try this! Pinned
I just want to lick the icing off! So glad you shared with us at Merry Monday. Pinned to our party board.
How many cupcakes were you able to ice with this recipe??? I’m making some for our family/home birthday party and for her school!
I believe I did 22 but I lay it on thick!
Can this be made ahead of time or is it best to do it the day of?
I would recommend the day of. I have made these frostings ahead of time though.
If I make these the day before, do you refrigerate them?
I would, yes. But take them out an hourish before serving – otherwise the buttercream will be hard.
Thank you so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Did you put some of the plain white icing in the piping bag as well, or just the colored?
I believe in a few I did add some plain white 🙂 For more bright colors, don’t.
Looks beautiful! What kind of food coloring did you use, and if you don’t add the plain white what do you do with it? Did you use white in the ones pictured?
I use the Wilton gel food coloring. The vibrant ones, I didn’t add white. The pastelish ones I did 🙂 I mixed it up a bit.
These are lovely! Can you halve the recipe? Or do you need to make a full batch to get the consistency right?
You can totally half the recipe Tori 🙂
Can you use a hand mixer instead of a stand mixer? I don’t own a stand mixer, but I want to make these for my daughter’s 2nd birthday tomorrow!
Absolutely 🙂
Do you think these would turn out with a standard star tip for cake decorating? I am making a number 6 cupcake cake and will just be decorating it with the stars side by side and not sure if the color will come out good still without the swirl.
Hey Amanda,
You know, I’m not a huge cake decorator so I’m not sure about this. I’m sorry. I’m sure there would be a bit of the tie dye nature but it wouldn’t be as rainbow-y. However, that’s just a guess.
I wanted to this with a sheet cake but spread it out not pipe it. Any ideas. Thanks
I would take the colors and do them in rows and blend with the back of a hot spoon?
This is exactly what I’m looking for to decorate my daughter’s 6th birthday cake! I loved the simplicity and real-life video tutorial—you seem very real and relatable and I will be coming back and trying your other recipes for sure! Thank you!
Thanks for coming by Samantha. I should have a video up in the next week of this particular recipe on how to make the swirl.
Can the frosting stay as it is if the cupcakes are placed under hot sun?
I had this frosting in the truck for 20 minutes with sun on it the other day and it was okay, but I wouldn’t do any more than that.
This was really easy to do! Thanks for sharing, I used the white chocolate buttercream recipe and it was so good!