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How to Make A Buttercream Brushstroke Cake

How to Make a Rainbow Buttercream Brushstroke Cake On Find Your Cake Inspiration

Hi everyone! I’m back with a new tutorial on a buttercream brushstroke cake. This cake technique is super easy and forgiving to do! It goes with any cake theme such as rainbow, unicorn, buttercream painting, etc. I settled on the rainbow theme for this cake because everyone needs more rainbow cakes in their lives! In addition, I’ve included a short time-lapse video below on how to do the brushstrokes. Let’s get started!

Buttercream Brushstroke Tutorial

Buttercream Brushstroke Cake Tutorial

Materials needed to create a buttercream brushstroke cake


  1. I baked my favorite vanilla recipe in these Fat Daddio’s 6″ inch cake pans using bake strips to ensure flat cake layers.
  2. Level the cake layers with Wilton Cake Leveler.
  3. Frost the cake with buttercream.
  4. Smooth the cake with the Wilton Cake Scraper.
  5. Split up buttercream in several bowls with your desired colors.
  6. I used this process to make the colors with swiss meringue buttercream and the Sugar Art Master Elite colors since the coloring part is a little bit different from your traditional gel colors. However, the gel colors absolutely can be used!
  7. Lightly dip the pastry brush in one of the colors. For this process, I only used one pastry brush, but you can use more than one pastry brush.
  8. Apply the brush to the bottom of the cake in an upward stroke.
  9. Clean the brush with a paper towel to scrape off the remaining color. (Skip this part if you have the same amount of pastry brushes as your colors)
  10. Repeat the process with the other colors.
  11. When you are done with the bottom of the cake, repeat the process on the top.
  12. Pipe the buttercream swirls on the top of the cake with a 1M piping tip.
  13. Apply the sprinkles after piping the buttercream swirls.
  14. Enjoy your beautiful cake!

I hope that you will give this technique a try! Please drop a comment below or tag me on @findyourcakeinspiration. I’d love to see your creation! NOTE: I did not create this technique but thought I’d create a cake with this technique! 🙂

I will be making more “How-To” posts with my old cakes from last year, so stay tuned for more posts like this!

I was recently featured on Feedspot’s Top 100 Blogs, so check it out if you want to find more cake/baking blogs!

For more amazing cake inspiration, check these out below!

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