Looking for a colorful (perhaps even “magically delicious”) snack? These Lucky Charms Bars are sure do the trick!
These fun bars for right in with other St Patrick’s Day rice krispie treat recipes. They are also great for birthday parties or just everyday snacking.

How to Make Lucky Charms Bars
St Patrick’s Day is one of my favorite holidays. Maybe it’s all the leprechaun lure or the four leaf clovers, I’m not sure.
So with St Patrick’s Day coming up, I wanted to come up with a few rice krispie treats themed for the day. Justin and I worked on these fun Gold Rice Krispie Treats and also these Green Rice Krispie Treats.
But I really wanted something I could make super quick also. And that’s when these Lucky Charms Bars entered the picture.
These are so super easy with only four ingredients and no baking. They take no time at all to whip up a colorful batch. And did I mention, how super magically delicious they are?
Making Lucky Charms Bars is basically the same as how to make rice krispie treats, just change out the type of cereal you are using. (Much the same as when making these equally colorful Fruity Pebble Rice Krispie Treats.)
Step one
Melt your butter and marshmallows and mix together. You can do this over low heat on the stove or in the microwave.
Pro tip: don’t overheat your marshmallows, they’ll get super hard and stiff.

Step two
Mix in your Lucky Charms cereal. Make sure to stir thoroughly so that the cereal is evenly coated in the butter and marshmallow mixture.
Step three
Using a buttered (or non-stick spray) coated spatula, spread your cereal and marshmallow mixture into a buttered dish.
Step four
Let your bars cool (this usually takes around 20-40 minutes) before cutting into serving sized squares.
Can I make Lucky Charms Bars in the Microwave?
Yes! You definitely can make these in the microwave. Just instead of melting butter and the marshmallows on the stove top, you melt them in the microwave. Super easy!
How do you store Lucky Charms Bars?
You’ll want to store these in an air right container. Room temperature is best.
Putting them in the refrigerator doesn’t ruin them (and I’ve done this before). But it definitely does make the bars harder and not as chewy.
I’m a little obsessed with making things in big batches. It’s a huge time saver later. And also, if you shop with coupons and stock up on an item, it’s better to be able to use it up before it goes bad.
So, if you want to make a double batch (or larger) or perhaps, you can’t finish them all in a few days, you can freeze them too.
Lucky Charms Bars
Equipment
- 9×13 Pan
- Spatula
Ingredients
- 6 Cups Lucky Charms cereal
- 3 tbsp Salted Butter
- 16 oz Marshmallows
Instructions
- Melt butter and marshmallows together. Do this in the microwave checking every 30 seconds or so. Or you can do this on low to medium heat in a pan on the stove top.
- Once melted and mixed, take off heat and add in the Lucky Charms cereal.
- Thoroughly mix marshmallows and Lucky Charms together.
- Grease spatula and pan and spread your mixture evenly into the pan.
- Let bars sit for 20 – 40 minutes to cool, then enjoy.