Lucky Charms Cereal Treats

Great for St. Patrick’s Day or any day of the year, these Lucky Charms Cereal Treats are buttery, gooey, and so much fun to make!

If you love Lucky Charms desserts, try these Lucky Charms Cupcakes or this delightful Lucky Charms Latte!

Stack of three Lucky Charms Cereal Bars.

After experimenting with Fruity Pebbles Treats, it was only a matter of time before I turned my second favorite kid cereal into a tasty marshmallow treat.

St. Patrick’s Day felt like the perfect time to make these Lucky Charms treats. They’re so easy to make and look so fun with all of the different marshmallow shapes and colors.

Read on to learn how to turn every leprechaun’s favorite cereal into a fun no bake dessert!

Ingredients for cereal treats recipe- Lucky Charms box, sweetened condensed milk, butter, and marshmallows.

Ingredients in Lucky Charms Treats

Lucky Charms bars can be as easy as combining Lucky Charms, butter, and marshmallows, but I like to add a few extra ingredients to make these super special. Here’s what you’ll need:

  • 5 Tablespoons butter
  • 1/4 cup sweetened condensed milk (the secret ingredient!)
  • Kosher salt
  • Splash of vanilla extract
  • 7 cups mini marshmallows, divided
  • 6 1/2 cups Lucky Charms cereal
Up close image of Lucky Charms treats with leprechaun hats, pot of gold, and moon marshmallows on top.

How to Make Lucky Charms Bars

  1. Melt the butter in a large pot on the stove over medium heat. Stir in the condensed milk and cook until just starting to bubble, 1-2 minutes.
  2. Add the salt and vanilla extract, then stir in 6 cups of marshmallows. Reduce the heat to low and cook, stirring often, until the marshmallows are just softened.
  3. Stir in the cereal along with the last cup of marshmallows. Stir until well coated. Transfer to a greased 8 inch square or 9 x 13 inch pan and cool before cutting.

Tip: reserve a few of the Lucky Charms marshmallows before adding them to the pot, then gently spread them on top of the finished bars for extra colorful treats. You can also buy a bag of Lucky Charms marshmallows here.

Hand holding a Lucky Charms Bar.

How to Keep Cereal Treats Soft and Gooey

  • Add sweetened condensed milk. The condensed milk adds a sweetness reminiscent of the milk left at the bottom of a bowl of Lucky Charms. Plus, it helps keep the treats soft!
  • Add a handful of mini marshmallows at the end. I like to add about a cup of mallows with the cereal that won’t quite melt all the way. This leaves lovely little pockets of gooey marshmallow in the treats.
  • Don’t pat the treats down. I know it’s tempting to push the treats down into the pan, but please resist this urge! Patting the mixture down leads to hard, dense treats. Instead, spray your hands with cooking spray and use them to gently spread the treats evenly out over the pan. No need to press them down!
Hands pulling apart a Lucky Charms Cereal Treat.

How long do Lucky Charms Cereal Treats last?

Lucky Charms Bars are best served within 24 hours, but thanks to the sweetened condensed milk, they’ll last for 2-3 days in a sealed container or tightly wrapped in saran wrap. Do not refrigerate.

More Easy No Bake Desserts to Try

Up close image of Lucky Charms treats with leprechaun hats, pot of gold, and moon marshmallows on top.

Lucky Charms Treats

Yield: 12 bars
Cook Time: 10 minutes
Total Time: 10 minutes

Gooey Lucky Charms Cereal Bars are a perfect no bake treat for kids! Celebrate St. Patrick's Day or any day with these fun and easy marshmallow treats!


  • 5 Tablespoons salted butter
  • 1/4 cup sweetened condensed milk
  • Pinch salt
  • Splash vanilla extract
  • 7 cups mini marshmallows, divided
  • 6 1/2 cups Lucky Charms cereal
  • Sprinkles (optional)


  1. Spray an 8 x 8 or 9 x 9 square baking pan with cooking spray. Set aside.
  2. Heat a large pot over medium heat. Add the butter and melt. Stir in the sweetened condensed milk and cook until bubbly, about 1-2 minutes. Stir in the salt and vanilla.
  3. Lower the heat then add 6 cups of the marshmallows and cook, stirring often and scraping the bottom of the pan, until melted.
  4. Remove from heat, then stir in the Lucky Charms along with the last cup of mini mallows. Stir together until well coated.
  5. Immediately transfer to the prepared pan. Spray your hands with cooking spray to evenly spread out the mixture. Do not pat down! Allow to cool before slicing and serving.


  • This makes 12 very thick Lucky Charms treats. If you prefer thinner treats, feel free to put this in a 9 x 13 inch pan.
  • A 10 ounce bag of marshmallows contains 6 cups. The final cup of marshmallows can be omitted if you only have a 10 ounce bag!
  • If desired, save a few of the marshmallows from the Lucky Charms before adding them to the melted marshmallow perspective. Press them gently on top of the finished bars for extra colorful treats.

Nutrition Information:
Yield: 12 Serving Size: 1
Amount Per Serving: Calories: 233Total Fat: 6gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 15mgSodium: 207mgCarbohydrates: 43gFiber: 1gSugar: 27gProtein: 3g

Please note nutritional information for my recipes is calculated by a third party service and provided as a courtesy to my readers. For the most accurate calculation, I always recommend running the numbers yourself with the specific products you use.

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