A Saint Patrick’s Day cake inspired by the colorful Lucky Charms! Layers of sprinkle cake, fluffy marshmallow cereal buttercream, and Lucky Charms marshmallows.
Lucky Charms Cake
Happy St. Patrick’s Day!
I’d like to say I planned this Lucky Charms cake around St. Patrick’s Day, but really I planned my St. Patrick’s Day around this Lucky Charms cake. The cravings started when a couple friends and I were debating the merits of Lucky Charms replacing the pot-of-gold marshmallows with unicorn marshmallows. I mean. Nothing against unicorns. I love unicorns. But some kind of loyalty to my 90’s childhood makes me a little resentful of the change…
But unicorns or no . . . I had a bowl of Lucky Charms every day for nearly two weeks. (Dear Ericka, my nutritionist whom I love dearly, let’s just pretend those snack entries in myfitnesspal never happened, shall we?) When I started thinking of a St. Patrick’s Day cake… the answer was a little obvious with Lucky (aka Sir Charms for all you trivia buffs), staring off the box at me.
From there . . . Lucky Charms cake. That is, layers of sprinkle cake (a la funfetti) and fluffy marshmallow buttercream swirled with blended cereal and lucky charms marshmallows.
Yes. Yes, please.
Tips & Tricks
Yes! Check my instagram and you’ll find a quick video of me decorating this cake!
Divide your buttercream among three bowls and successively apply slightly more food coloring to each bowl. Load up three piping bags. After your crumb coat, pipe each color over about a third of the cake, from dark to light. At each spot where one color transitions into the next, use the tip of a spatula to swipe from the light into the dark, about an inch. Make little swipes around the the circumference of the cake. This helps the transition look less “perfect” and more natural. Use a cake scraper to scrape the sides of the cake smooth! If the transitions still look too stark, then repeat the little swipes with the spatula and scrape smooth again.
I use quick and easy DIY cake strips. I have a post and step-by-step photos of how to make an easy insulated cake strip. These get me a flat top on all my cake recipes – no trimming necessary!
I used a multi-green and gold St. Patrick’s Day mix from ManvsCakes. To get the look pictured above, I mixed the green and gold sprinkles about 60/30 with a generic rainbow sprinkle mix! (And lucky charms marshmallows, duh.)
If you make this cake, be sure to leave a comment and/or give this recipe a rating! I love to hear from you guys and always do my best to respond to each and every comment. And of course, if you do make this recipe, don’t forget to tag me on Instagram! I love looking through the photos of recipes you all have made!