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Desert Chica

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Lucky Charms Piñata Cupcakes

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January 14, 2025 · Karen · 2 Comments

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Check out these fun leprechaun inspired cupcakes with Lucky Charms hidden inside like a pinata. They are easy cupcakes to make with a surprise of marshmallows hidden inside for kids and adults to enjoy. Top with rainbow candy or a cupcake topper and you will have a festive dessert for St. Patrick's Day. St. Patricks Day Dessert | St. Patricks Day Food for Kids | St. Patrick's Day Dessert | Rainbow Cupcake | St. Patrick's Day Treats | St. Patrick's Day Cupcakes

A few years ago, I created these amazingly fun St. Patrick’s Day cupcakes inspired by the tricks that leprechauns like to do. Everyone knows that Lucky Charms is the unofficial breakfast of leprechauns. So why not make Lucky Charms cupcakes?  

Check out these fun leprechaun inspired cupcakes with Lucky Charms hidden inside like a pinata. They are easy cupcakes to make with a surprise of marshmallows hidden inside for kids and adults to enjoy. Top with rainbow candy or a cupcake topper and you will have a festive dessert for St. Patrick's Day. St. Patricks Day Dessert | St. Patricks Day Food for Kids | St. Patrick's Day Dessert | Rainbow Cupcake | St. Patrick's Day Treats | St. Patrick's Day Cupcakes

Lucky Charms Cupcakes

Instead of simply decorating the  St. Patrick’s Day cupcakes with Lucky Charms, I thought it would be more fun to hide the Lucky Charms marshmallows inside the cupcakes, sort of like the very popular candy-filled piñata cupcakes. Doesn’t that seem like something leprechauns would appreciate? Hiding magically delicious marshmallows inside the cupcakes.

Start with green cupcakes when making st. patrick's day surprise cupcakes with lucky charms hidden inside

Piñata Cupcakes for St. Patrick’s Day

I started by making cupcakes using a box of green velvet cake mix. Green food dye in a white cake mix would totally work too. 

Core out the center of the cupcake for the St. Patrick's Day Lucky Charms Cupcakes

Let the cupcakes cool completely, then use a knife to core out the center of the cupcake. Pull out the bite size cupcake cores and resist eating all of them. 😉 Fill the center of each cupcake with Lucky Charms Marshmallows.

Fill the center of the cupcakes with marshamallows from Lucky Charms Cereal for an extra fun St. Patrick's Day surprise

St. Patrick’s Day Cupcake Piñata

Now it’s time for the leprechaun’s trickery. Generously frost the cupcakes with green frosting and hide the marshmallow loot! 

Lucky Charms cupcakes with marshmallows hidden in the center of green cupcakes are a fun and tricky St. Patrick's Day treat that even the leprechauns will appreciate

Rainbow Cupcakes

Since the whole premise of these St. Patrick’s Day cupcakes are based on Leprechaun’s trickery, I really think they need a rainbow on top. The rainbow is almost like a clue that there is a hidden treasure beneath the frosting! 😀

Rainbows hint at the treasure hidden inside these magically delicious St. Patrick's Day cupcakes

Candy Rainbow Cupcakes

You could decorate the top with fun rainbow candy options like airhead rainbows or mini M&M candies but I figured I already had enough sugar with the marshmallow surprise inside the cupcakes.

Sugar-free Rainbow 

Instead I opted to just add these rainbow cupcake toppers. You can download the jumbo version here and the smaller version here for free. I also love these rainbow cupcake rings and wrappers I found on Etsy!

Print these free rainbow cupcake toppers to add a hint of whimsy to the St. Patrick's Day cupcake pinatas

St. Patrick’s Day Cupcake Ingredients

  • Green cake mix or green food dye in white cake mix
  • Marshmallows from Lucky Charms cereal
  • Green Frosting (homemade or canned)
  • Rainbow candy or cupcake topper

St. Patrick’s Day Cupcake Tips

Keep in mind the cupcakes are moist and some of that moisture will eventually make the marshmallows soggy just like in milk. I personally prefer crunchy Lucky Charms marshmallows BUT the cupcakes are yummy either way. If you want crunchy cupcake centers then wait to add the marshmallows and frosting until just before serving them.

Lucky Charms marshmallows hidden inside St. Patrick's Day cupcakes

Making Bulk St. Patrick’s Day Cupcakes?

If you are making a lot of St. Patrick’s Day cupcake piñatas then you might consider buying a bag of cereal marshmallows in bulk. Sorting lots of marshmallows out of Lucky Charms cereal might get a little tedious.

Easy Way to Frost Cupcakes

If you aren’t super proficient with frosting cupcakes check out these easy frosting hack. Start with basic store bought frosting and put it in a Wilton piping bag or a Ziploc bag. Set the bag upright in a mason jar, filled it with frosting, then cut the tip off. You can use the cup as a stand in between frosting the cupcakes. It’s a mess-free way to frost. 

Unassuming green cupcakes hide a treasure inside of Lucky Charms cereal marshmallows

More Lucky Charms Recipes 

  • Lucky Charms hot cocoa bombs using both types of marshmallows.
  • Easy Lucky Charms cookies made with cake mix.
  • Lucky Charms s’mores using the new extra large marshmallows
  • Even more Lucky Charms recipe ideas

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Hi! I’m Karen.

I'm a mom to two boys, Arizona native, and travel lover. Desert Chica is my place to share a peek into our life and the easy and inexpensive costumes, crafts and desserts I like to make. “If I can do it, anyone can!” Learn more about me here.

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