Lucky Charms Treats

Lucky Charms Treats are a fun and delicious holiday-inspired treats made from Lucky Charms cereal, mini marshmallows, melted butter, and decorated with Lucky Charms marshmallows and rainbow sprinkles!

9 lucky charms treats bars cut into squares on a light pink slab background

These bright and cheerful St Patrick’s day treats are an easy no-bake recipe for the kids to help assemble or package as gifts in clear cello bags with ribbons and gift tags.

They’re crunchy, gooey, sweet, and totally irresistible!


This holiday-themed sweet treat is named after the popular Lucky Charms cereal brand that’s made up of toasted oat cereal pieces in various shapes and sizes, together with mini marshmallows.

The addition of lucky charms in this recipe gives these treats a burst of color and a touch of fun – perfect for adults and kids to enjoy on St Patrick’s day!

close up show of a lucky charms marshmallow dessert bar


You can store these lucky charms treats in an airtight container at room temperature for 2-3 days with a sheet of parchment paper to line the bottom of the container, which will help prevent the treats from sticking.

Remember that the longer these lucky charm treats are stored, the more hard and stale they are likely to become.


While you could refrigerate these crunchy cereal treats, this could affect their texture. If you are planning to extend their shelf-life, consider freezing them instead. 

side view of stacked lucky charms treats bars


It’s possible to freeze these lucky charm treats for up to 3 months which is great for leftovers or if you plan to make these in advance.

Once assembled and cut into slices, transfer the individual pieces to a parchment-lined baking tray and flash-freeze them for about 2 hours. This will help harden the treats so that they aren’t as sticky for storage purposes.

Wrap the individual lucky charm treats in wax paper and then store them in a Ziploc bag in the freezer.

marshmallow lucky charms bars stacked on top of a peach colored plate


  • While I’ve made these marshmallow cereal treats bars specifically with St Patrick’s day in mind, you can easily use this recipe as a foundation for other holidays and special occasions by using different themed cereals and adding color-specific candy to the mix.
  • I’ve cut individual pieces into squares, but you could use a cookie cutter and create fun shapes with these treats. There may be some wastage when using cookie cutters.
  • Enhance the bright colors in these treats by sprinkling some colorful sanding sugar over the cereal treats while they are still slightly sticky, or drizzle some melted white chocolate with food coloring of your choice added.
overhead shot of lucky charms treats bar being pulled apart with marshmallow strings


  • Don’t omit the salt in this recipe. It helps to balance the flavors, especially since these treats are quite sweet.
  • I’ve found that a 10-ounce bag of mini marshmallows is perfect for these lucky charms treats. Adding more to the mix will make the treats overly gooey and sweet.
  • I’ve used a 9×13 pan, but you could use two smaller pans instead. For example, you could divide the mixture between two 8×8 pans. Alternatively, halve this recipe if you only have one smaller pan to work with.
  • Don’t use a smaller pan with the aim of making thicker lucky charms treats. From experience, I’ve found thicker cereal treats to be difficult to eat.
  • It’s always a great idea to apply some nonstick cooking spray to your hands to prevent these treats from sticking to your skin, especially if you use your hands to pat the mixture down in the pan.
lucky charms treats bars made with cereal

More Delicious Sweet Treats to Enjoy

Yield: 12 Bars

Lucky Charms Treats

Lucky Charms Treats

These Lucky Charms treats are loaded with marshmallows and flavor. They are fun to make and always a huge hit with the kids. They are crunchy, sweet, and extra gooey from the added marshmallows

Prep Time 15 minutes
Cook Time 1 hour
Total Time 1 hour 15 minutes


  • 1 stick unsalted butter, melted
  • ¼ teaspoon salt
  • 10 ounce bag mini marshmallows
  • 10 cups Lucky Charms cereal
  • ½ cup Lucky Charms marshmallows for topping (optional)
  • Rainbow sprinkles (optional)


  1. Lightly grease the bottom of a 9x13 baking pan with cooking spray and line it with parchment paper. Set aside.
  2. Melt butter in a large pot over low heat and stir in the salt.
  3. Add the marshmallows and stir constantly over low heat until it melts. It is ok if there are still small lumps of marshmallows.
  4. Once the marshmallows have melted, remove the pot from the heat and add the cereal.
  5. Fold it together with a wooden spoon until the cereal is evenly coated with the melted marshmallow mixture, being careful not to crush the cereal.
  6. Gently spread the mixture into the prepared baking pan into an even layer. Do not press it in together too hard otherwise you will end up with hard treats.
  7. Immediately top with extra Lucky Charms marshmallows and sprinkles for a fun touch.
  8. Allow it to cool completely on the counter for 30 minutes to 1 hour before slicing into bars.


These Lucky Charms treats are best eaten the same day but you can store leftovers in an airtight container on the counter for up to 2 days. Any longer and they will start to get hard and stale. I do not recommend refrigerating as it will harden.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Pinterest

Similar Posts

Leave a Reply

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

This site uses Akismet to reduce spam. Learn how your comment data is processed.