Lucky Charms Cupcakes with Marshmallow Buttercream

*Want more St. Patrick’s Day recipes? Try my boozy Shamrock Shakes with Bailey’s whipped cream and Pot ‘O’ Gold cake batter truffles!

Where did all the sugary cereals of my youth go? TV channels abound used to be LITTERED with the adorable mugs of Toucan Sam, the Cookie Crisp Burglar, and that silly Trix Rabbit. The Cinnamon Toast Crunch section of the cereal aisle at the grocery story used to span from floor to ceiling, seven deep and ten across on each shelf. Puffs that turned your milk into liquid chocolatey goodness used to be a universally accepted meal choice. YOU COULD EAT MARSHMALLOWS FOR BREAKFAST.

Somewhere between our country’s slide into the Fat Farm and Michelle Obama’s meek attempts to “fix” the childhood obesity epidemic, my beloved toy-stuffed boxes of love became a thing of the past. Like an endangered species, a stingy sprinkling of Lucky Charms boxes sit on store shelves, losing a battle for the limelight to the high-fiber sugar-free bran buds and the cereals fortified with every vitamin and mineral under the sun. Sure, the sugary cereals still exist, but putting a box in your shopping cart and toting it on over to the checkout line is more akin to some sort of public shaming than a simple purchase.

Now, the thought of an obese six-year-old with rotten teeth disturbs me just as much as the next guy, but c’monnn… a little Fruity Pebbles never hurt anyone. Hell, one bowl of Reeses Puffs for breakfast every single day for five years never hurt anyone. And while we’re on the subject, New York, Big Gulps never hurt anyone either. So do us all a favor and overturn your stupid ban on sodas served in 16+ oz helpings– it’s an entirely misguided effort. If I’m jonesing for a Diet Dewski, I’ll buy a twelve-pack.

Cereal doesn’t kill people– serial killers do.

And now, for a moment of nostalgia…:

My fellow babies of the 80s and children of the 90s, do you remember when you could eat Lucky Charms WHILE watching the Disney Channel original movie, Luck of the Irish? An epic collide of magical deliciousness and a heartwarming sports story? Did it not blow your mind?

To bring the sugar and magic back to life over a decade later, I decided to inject cupcakes with some Lucky Charms cereal. And, if you must know, the evening I served said cupcakes, the Notre Dame Fighting Irish decimated the Oklahoma Sooners to maintain their still-undefeated record in the college football world. If that isn’t a modern Luck of the Irish tale, then I don’t know what is.

Go Irish!

*NOTE* For a different spin on cereal-inspired cupcakes, try these Cinnamon Toast Crunch cupcakes!

Lucky Charms Cupcakes with Marshmallow Buttercream

Lucky Charms Cupcakes with Marshmallow Buttercream

Magically delicious!

It ain't easy being green.

It ain’t easy being green.

Lucky Charms Cupcakes with Marshmallow Buttercream

Gold sprinkles for Lucky Charms cupcakes.

The essential ingredient: a pot of gold.

Lucky Charms Cupcakes with Marshmallow Buttercream

Lucky Charms Cupcakes with Marshmallow Buttercream

Prep Time: 20 minutes

Cook Time: 20 minutes

Total Time: 50 minutes

Yield: 2 dozen cupcakes

Lucky Charms Cupcakes with Marshmallow Buttercream


    For the cupcakes:
  • 1 box white cake mix (I like Duncan Hines brand)
  • 3 large eggs
  • 3/4 cup sour cream (do NOT use "light," "reduced fat," or "fat free" !)
  • 3/4 cup whole milk
  • 1/3 cup vegetable oil
  • 1 teaspoon pure vanilla extract
  • ½ cup finely crushed Lucky Charms (cereal pieces only, no marshmallows)
  • 26 drops green food coloring
  • For the buttercream:
  • 4 1/2 cups powdered sugar
  • 1 (13 oz) jar Marshmallow Fluff
  • 1/2 cup (1 stick) unsalted sweet cream butter, softened
  • 1 teaspoon pure vanilla extract
  • 4 oz (1/2 block) cream cheese
  • Gold crystal sprinkles and Lucky Charms marshmallows to top


  1. Preheat oven to 350 degrees F and place cupcake liners in a cupcake pan
  2. Whisk together cake mix, sour cream, eggs, milk, oil, and vanilla extract in a large bowl until smooth
  3. Mix in drops of green food coloring until desired shade of green is reached
  4. Pulverize Lucky Charms cereal in a mini food processor and add to batter, mix well
  5. Fill cupcake liners 3/4 full and bake for 19-22 minutes
  6. Remove cupcakes from oven and place on a wire cooling rack
  7. While cupcakes are cooling, mix together fluff, butter, powdered sugar, vanilla, and cream cheese in a medium-sized bowl with a hand-held mixer
  8. Pipe buttercream onto cooled cupcakes, dust with sprinkles, and place one Lucky Charms marshmallow on top of each right before serving (*marshmallows will become soggy if placed on cupcakes and stored for a long period of time)


  1. […] Lucky Charms Cupcakes with Marshmallow Buttercream from Kailley’s Kitchen Healthy Shamrock Shake from An Edible Mosaic Individual Chocolate-Topped Mint Cheesecakes from An Edible Mosaic Thin Mint Puppy Chow from Sugary Sweets Chocolate Mint Pretzel Bites from Sugary Sweets Ombre Green Rice Crispy Treats from Love from the Oven Mint Chocolate Chip Buttercream Bites from Love from the Oven Lime Sherbet Floats from Homecooking Memories Vegan Peppermint Paddy Cupcakes from The Recipe Renovator Chocolate Dipped Mint Oreos from Very Culinary St. Patrick’s Day Pistachio Mousse Cups from Cravings of a Lunatic Pistachio Shortbread Cookies from Karen’s Kitchen Stories Fudge Mint Popcorn from Inside BruCrew Life Thin Mint Fudge Brownies from Inside BruCrew Life Mint Chocolate Truffles from Wine and Glue Easy Leprechaun Bait from Wine and Glue Leprechaun Shakes from The Kitchen is My Playground Chocolate Mint Rice Crispy Treats from Chocolate Moosey Shamrock Shake With Bailey’s Whipped Cream from Chocolate Moosey Rainbow Painted Sugar Cookies from Snappy Gourmet Leprechaun Smoothies from Foodie Tots Irish Rainbow Cookies from Always Order Dessert Rainbow JELLO Cubes from Mom on Timeout Green Candied Popcorn from Cupcake Diaries Lucky Charms Treats from Cupcake Diaries Pot O’Gold Cereal Snack Mix from Yummy Healthy Easy Green Mint Chocolate Chip Cookies from Yummy Healthy Easy Thin Mint Truffles from Hezzi-D’s Books and Cooks Peppermint Patty Brownie Bites from Back for Seconds Mint Chocolate Cupcakes from A Healthy Life for Me Green Velvet Cupcakes from Hezzi-D’s Books and Cooks Chocolate and Green Tea Truffles from Ricki Heller Chocolate Mint Rice Krispie Treats from Miss in the Kitchen No Bake Kiwi Lime Cheesecake Tarts with a Gingersnap Crust from Apron Strings St. Patrick’s Day Rice Krispies Treats from Around My Family Table Fudgy Double Crème de Menthe Brownies from Keep it Sweet Desserts St. Patrick’s Day Mint Chocolate Cookie Sandwiches from Keep it Sweet Desserts Mint Chocolate Chip Popcorn Treats from Crazy for Crust […]

Leave a Reply

Your email address will not be published. Required fields are marked *