St. Patrick's Day

Lucky Charms Marshmallow Rice Krispie Treats

Made with colorful jet-puffed colorful Lucky Charms marshmallows mixed into classic Rice Krispie Treats!

  • Prep10 minutes
  • Total10 minutes
  • Yield12 servings

Published 15 Mar 2026

Lucky Charms Marshmallow Rice Krispie Treats

Magically Delicious Rice Krispie Treats!

This recipe is a fun, no-bake twist on the classic cereal treat everyone loves! Made with gooey melted marshmallows, buttery goodness, and colorful Lucky Charms puffy marshmallows, these bars are soft, chewy, and packed with playful marshmallow bites in every square!

These are quick to make, kid-friendly, and perfect for adding a little nostalgia and magic to your St. Patrick’s Day festivities. Lucky Charms Marshmallow Rice Krispie Treats are guaranteed to bring smiles with every bite!

If you like making holidays easy and colorful with festive Rice Krispie Treats , then I think you’ll love Easter Marshmallow Rice Krispie Treats , Candy Corn Marshmallow Rice Krispie Treats , and Valentine Marshmallow Rice Krispie Treats , too!

What You’ll Love About this Recipe

Extra Gooey – The added marshmallows help these to stay soft and chewy!

Colorful Lucky Charms Marshmallows in Every Bite!

Simple Ingredients – Make these in 5-minutes!

Kid-Friendly – These are fun to make together!

Lucky Charms Marshmallow Rice Krispie Treats

Ingredients You’ll Need

3 tbsp Butter, Melted

1 (10 oz) bag Marshmallows

6 cups Rice Krispies Cereal

2 cups Jet Puffed Lucky Charms Shaped Marshmallows

Lucky Charms Marshmallow Rice Krispie Treats

How to Make Lucky Charms Marshmallow Rice Krispie Treats

Spray 9 x 13 pan with non-stick spray and set aside.

Melt 3 tbsp butter in a large microwave safe bowl.

Pour 1 (10 oz) bag of marshmallows into the bowl and stir.

Place into microwave for 45 seconds, remove and stir.

Return to the microwave and heat for another 45 seconds. Remove from the microwave and stir again.

Pour 6 cups Rice Krispies into the melted marshmallows and mix until well combined.

Then stir in 2 cups jet puffed Lucky Charms shaped marshmallows until mixed in well.

Distribute evenly and press firmly into the pan.

Press additional jet puffed Lucky Charms shaped marshmallows into the top of the treats.

Pro Tip: Place a Ziplock bag over your hand and spray the outside of the bag with non-stick spray before pressing down the Rice Krispie Treats. This helps to keep them from sticking to your hand!

Lucky Charms Marshmallow Rice Krispie Treats

Are these treats good for St. Patrick’s Day?

Absolutely! The puffy Lucky Charms marshmallows make these a popular choice for St. Patrick’s Day parties or school treats.

How do I keep Rice Krispie Treats soft and gooey?

To keep them soft, melt the marshmallows in the microwave to avoid overheating, don’t pack the mixture into the pan too tightly, and make sure to use the amount of marshmallows recommended in the recipe for a gooey texture.

How should I store these?

Store treats in an airtight container at room temperature for up to 3 days. Refrigerating is not recommended, as it can make them firm.

Can I make these treats ahead of time?

Yes! These treats can be made 1-2 days in advance. Store them in an airtight container at room temperature to keep them soft and fresh.

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Wawje!

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