This Rainbow Heart cake isn’t your typical red and pink! It’s gorgeous rainbow hue is sure to make everyone smile.
If ever there was a time that we all needed a happy cake, I would suggest that this was it.
Is there anything happier than all the colors of the rainbow? And hearts? And love?
I didn’t think so.
I always love coming up with fun new treats for Valentine’s Day, and the moment this idea for this cake hit me, I couldn’t stop thinking about it. Is it normal to dream about cake? Asking for a friend (me).
Hearts are incredibly easy to pipe, even for a novice. Staggering the colors gives it a gorgeous effect without a ton of effort! Rainbow cake for all the days. Hip, hip, hooray!
Just to be clear, you don’t HAVE to make this cake for Valentine’s Day. You could make it for a birthday! Or a Tuesday! Or make it for someone who hates you because when you give it to them it will be awkward!
For some reason, I thrive in awkwardness. I revel in the thickness of air ripe with awkward. I wrap myself up in it like a cozy blanket in the winter. Awkward is my spirit animal.
Or! Or. You could make it for yourself. Because you love yourself! We should all love ourselves enough to make a rainbow heart cake for ourselves. Who cares if that’s weird? ALL OF THE BEST PEOPLE ARE WEIRD.
For step-by-step instruction on making this beauty, I have a video at the top of this post that shows the process. I used a #12 round tip for piping the hearts and a large round cupcake frosting tip for the top.
Once you get the frosting divided and colored, you’ve done the hardest part.
You’ll need approximately 3 batches of buttercream (maybe a bit less but I hate running out) for the hearts and the dollops at the top. Recipe included below.
- 1 3-layer (8 inch) round cake, assembled and frosted
- 6 sticks salted butter, softened
- 1 cup heavy whipping cream
- 2 Tablespoons vanilla extract
- 12 cups powdered sugar
- Gel food color: red, orange, yellow, green, blue, purple
- Mini M&Ms for top of cake
- In the bowl of your mixer, beat butter and heavy cream on medium low until combined. With the mixer on low, slowly add powdered sugar, mixing until just combined. Increase mixer speed to high and beat for a minute and a half, until fluffy (you may need to make the frosting in two batches to accommodate your mixer size).
- Place 1/3 of the frosting in a bowl and reserve for top of cake. Divide the remaining frosting into 6 bowls and color.
I hope this cake makes you happy, too! Have a great day :)