St Patrick’s Day Rice Krispie Treats Recipe is an easy dessert and so festive. These Lucky Charms Marshmallow Treats will be a hit and taste ooey gooey.

St patrick's day rice krispie treats cut into squares.
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The combination of two popular cereals is a fabulous twist on a classic no bake dessert recipe. These tasty cereal bars have lots of melted marshmallows and come together for a yummy treat. The kids ask for every year and I love to make them.

The addition of green food coloring makes this recipe even more festive for St. Patrick’s Day. These Lucky Charms Rice Krispie treats taste great and look amazing. You might also like Leprechaun Cookies.

I also make Easter Egg Rice Krispie Treats that you might want to save for Easter.

Why this recipe works

  • It combines the Best Rice Krispie Treat Recipe with tasty Lucky Charms cereal.
  • The recipe is super easy to prepare.
  • The ingredient list is minimum and budget friendly.

Ingredients

Ingredients for St patrick's day rice krispie treats - rice krispie cereal, lucky charms, butter, marshmallow, green food coloring.
  • Rice Krispie Cereal
  • Lucky Charms Cereal (plus extra marshmallows to add on top) 
  • Butter
  • Marshmallows
  • Green Gel Food Coloring

Find the complete ingredients for this recipe in the recipe card at the bottom.

Variations

  • Food Coloring. The green food coloring makes it festive but you can omit it if you prefer. It will still look great with the Lucky Charms Marshmallows.
  • Sprinkles. Rainbow sprinkles are perfect to add to this dessert for St. Patrick’s Day. Add a handful to the top before it sets once in the pan.
  • Chocolate cereal. Chocolate fans might like to try a chocolate version of this dessert. Substitute Cocoa Krispies and Chocolate Lucky Charms for tons of chocolate flavor.

How to make St. Patrick’s Day Rice Krispie Treats

  • Step 1. Prepare the pan. Spray a 9X13 pan with a non-stick cooking spray and set aside.
Butter and mini marshmallows in a pot.

Step 2. Melt the butter and mini marshmallows. Place the butter and marshmallow in a large saucepan and melt butter over low heat. Make sure you stir constantly.

Mixture melted and green food coloring added.

Step 3. Once the ingredients are melted and combined, remove from heat. Add in the green gel food coloring until the mixture is a vibrant green coloring.

Mixture combined in pot.

Step 4. Gradually stir in the Rice Krispie Cereal and Lucky Charms Cereal.  Mix until the cereal is coated in the marshmallow and butter mixture.

Cereal mixture pressed into baking dish.

Step 5. Spread into the baking dish. Spray a piece of parchment paper with non-stick cooking spray. Use the parchment paper to press the cereal down into the baking dish.

More Lucky Charms cereal sprinkled on top.

Step 6. Step 6. Top with the additional marshmallows from the Lucky Charms cereal. 

Squares of lucky charms on a platter.

Step 7. Let the Rice Krispie treats set for 60 minutes until set.  Then slice, serve and enjoy! 

Storage

Store the leftovers in an airtight container at room temperature for up to 5 days. 

We no do recommend refrigerating these Rice Krispie treats as they get brittle and lose their delicious gooey-ness! 

Can you freeze rice krispie treats?

Yes, these treats can be frozen. I prefer to flash freeze cut into squares for 1-2 hours and then place in a freezer container.

Another method is to wrap in parchment paper and freeze immediately in a container or bag.

They can be frozen up to 6 months. The texture may change a little bit once frozen but they will still be yummy.

Recipe Tips

  • Don’t overcook the marshmallows. Be very careful to only cook the marshmallows as directed. Overcooking the marshmallows will make the mixture very sticky and it will be difficult to set.
  • Combine ingredients together quickly. You want to combine everything together before the marshmallows set.
  • Top with extra marshmallows. The treats are even more festive with Lucky Charms Marshmallows. Don’t forget to reserve some for the top. They need to be pressed into the top before it sets or they will not stick.
  • Press the mixture with parchment paper. The mixture can be very sticky. Spray wax paper with cooking spray or a spatula. Then press into the mixture to even it out.
  • Allow to set. The mixture needs time to set before cutting. Attempting this too soon will result in a sticky mess.
St patrick's day rice krispie treats cut into squares.

More St Patrick’s Day desserts

Follow this easy recipe and enjoy a delicious treat. Then come back and leave a star rating and comment. It makes my day to hear from you.

St. Patrick’s Day Rice Krispie Treats

4.83 from 57 votes
St Patrick's Day Rice Krispie Treats Recipe is an easy dessert and so festive. These Lucky Charms Marshmallow Treats will be a hit and taste ooey gooey.
Prep Time 15 minutes
Allow to Set 1 hour
Total Time 1 hour 15 minutes
Servings 12
Cuisine American
Course Dessert
Calories 161

Ingredients

  • 3 cups Rice Krispie Cereal
  • 3 cups Lucky Charms Cereal plus extra marshmallows to add on top
  • 3 tbsp Butter
  • 1 pkg Marshmallows 10 oz
  • Green Gel Food Coloring
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Instructions

  • Spray a 9X13 pan with a non-stick cooking spray and set aside.
  • Place the butter and marshmallow in a large saucepan and melt butter over low heat stirring frequently.
  • Once the ingredients are melted and combined, remove from heat. Add in the green gel food coloring until the mixture is a vibrant green coloring.
  • Gradually stir in the Rice Krispie Cereal and Lucky Charms Cereal.  Mix until the cereal is coated in the marshmallow and butter mixture.
  • Press the mixture into the 9X13 pan or baking sheet.  I spray a piece of parchment paper with non-stick spray and use that parchment paper to press the cereal down into the baking dish.
  • Top the Rice Krispie treats with additional marshmallows from the Lucky Charms cereal.
  • Let the Rice Krispie treats set for 60 minutes until set.  Then slice, serve and enjoy!

Recipe Notes

We no do recommend refrigerating these Rice Krispie treats as they get brittle and lose their delicious gooey-ness! 
Store the leftovers in an airtight container at room temperature for up to 5 days.

Nutrition Facts

Calories 161kcal, Carbohydrates 32g, Protein 2g, Fat 3g, Saturated Fat 2g, Polyunsaturated Fat 0.3g, Monounsaturated Fat 1g, Trans Fat 0.1g, Cholesterol 8mg, Sodium 137mg, Potassium 31mg, Fiber 1g, Sugar 18g, Vitamin A 807IU, Vitamin C 7mg, Calcium 41mg, Iron 4mg

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About the Author

Hi, I’m Carrie. Welcome to Desserts on a Dime!

I’m on a mission to help you create delicious desserts on a budget and do not require a ton of time. Together, we are going to make something sweet that the entire family will love!

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