Lucky Charms Cupcakes (Cakes Filled with Cereal)

If you want a touch of the Irish, whip up these filled Lucky Charms cakes! A green cupcake that is stuffed full of Lucky Charms Marshmallows and topped with your favorite frosting and an extra sprinkle of festive sprinkles. These cereal cupcakes are irresistible to the entire family.

Cupcakes with lucky charms marshmallows inside topped with frosting and sprinkles.

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This is the perfect St. Patrick’s Day dessert recipe to try out. I am a lover of the crunchy and sweet marshmallows that give this cupcake an incredible flavor.

Table of Contents

Why You’ll Love This St. Patrick’s Day Dessert

These cakes are made with boxed cake mix, offering convenience and time efficiency, though homemade cake mix can be used for those who prefer it.
They feature a filled center, providing a delicious surprise with every bite.
They are made with Lucky Charms Marshmallows, one of everyone’s favorite childhood cereals, bringing a touch of nostalgia and a fun twist to the classic cupcake.
They serve as a fun and festive St. Patrick’s Day dessert, adding charm and sweetness to your celebration.
They are kid-friendly, making them a great option for family gatherings or parties where children will be present.

Ingredients For Lucky Charm Cakes

Ingredients for lucky charms cupcakes sitting on a marbled countertop.

Box Cake Mix: This is your base for creating the cakes. Opt for a simple white or vanilla mix to allow the other flavors to shine through.
Green Food Coloring: A few drops of this magical liquid will transform your batter into a vibrant, festive green – perfect for St. Patrick’s Day celebrations.
Lucky Charms Marshmallows: These cereal marshmallows are the hidden gems in your cakes. They add a nostalgic sweetness and a surprise element to every bite.
Frosting Of Choice: Choose a complementary flavor, such as cream cheese or vanilla, to top off your cupcakes.
St. Patrick’s Day Sprinkles: Use these for the finishing touch, adding a bit of sparkle and texture to your cupcakes.
Gold Edible Glitter: For a truly festive and glamorous touch, sprinkle your cakes with this edible gold glitter. It’s sure to make your desserts shine, both figuratively and literally.

Substitutions and Variations

Use any flavor of cake mix you want.
Or opt for a homemade cake mix recipe to use.
Color your frosting green for an even more festive St. Patty’s Day feel.
Swap the sprinkles out with Lucky Charms marshmallows.
Fill the cupcakes with sprinkles or St. Patty’s Day candy instead of marshmallows.

The complete list of ingredients, quantities, and instructions can be found in the printable recipe card below.

How To Make Lucky Charm Cakes

Collage of assembling lucky charms cupcakes.

Preheat the oven and prepare the cupcake batter in a large bowl per the box’s instructions. Optional: Add green food coloring to the cake batter.
Bake cupcakes. Allow cupcakes to cool completely on a wire rack after baking.
Hollow out the center of each cupcake with a spoon. (Photo 1)

Collage of decorating lucky charms cupcakes.

Fill the hollowed center of the cake with Lucky Charms marshmallows. (Photo 2)
Pipe frosting on each cupcake with a piping bag. (Photo 3)
Add desired sprinkles and edible glitter to match the St. Patrick’s Day theme. (Photo 4)

Four green cupcakes filled with lucky charms marshmallows with white frosting and green sprinkles.

Expert Tips

To ensure even cooking, fill each cupcake liner equally with batter. A cookie scoop can help with this.
For a more vibrant color, consider using gel food coloring instead of the liquid variety. It delivers a stronger color without changing the consistency of your batter.
When hollowing out the cupcakes, be careful not to dig too deep, as this could cause the base to crumble.
To pipe frosting like a pro, start at the outer edge of the cupcake and work your way toward the center in a swirling motion.
When sprinkling edible glitter or sprinkles, do so over a clean baking sheet to catch any excess and prevent mess.

Storing Tips

These cupcakes can be stored at room temperature in an airtight container. These cupcakes will last for around 3-5 days on the counter. You will find they begin to dry out after a few days. I always recommend eating them within the first 2 days of making.

In terms of freezing, you can freeze cupcakes for 3-4 months in a proper container. Thaw on the counter and then enjoy the cupcakes later!

What To Serve With Lucky Charm Cakes

These cupcakes are so fun and are perfect for St. Patrick’s Day dessert but don’t box these cupcakes in. Serve up these cereal cupcakes when you do breakfast for dinner. Or you can do these cupcakes for a birthday party if you are looking for a lucky theme.

Recipe FAQs

Can you buy just Lucky Charms marshmallows?

You can buy just the marshmallows if you don’t want to buy a box of Lucky Charms cereal. But, also know you can buy a box of cereal and pick out some of the marshmallows if you want. It takes just a few minutes to do.

How to know when the cupcakes are done?

Take a toothpick and stick it in the center of the cupcake. If the toothpick comes out clean of wet batter, the cupcakes are done baking. Then place on a cooling rack and allow the cupcakes to fully cool.

What to do with leftover cupcakes from filling cupcakes?

You can just eat the cupcake that you removed to fill the centers of the cupcakes. Or you can crumble the cupcake add a little frosting, and roll it into balls. Then dip in a chocolate candy melt to make cake bites or put on a stick for a cake pop.

Cupcakes with frosting topped with St. Patrick's Day themed sprinkles.

More Delicious Desserts

Here are more tasty desserts, just like my favorite Lucky Charms dessert. Whip these up for guests or your family soon.

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Green cupcakes filled with Lucky Charm marshmallows topped with white frosting.

5 from 1 vote