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    Home » Recipes » St. Patrick's Day

    Magically Delicious Lucky Charms Marshmallow Treats

    By Susan Ensley · Mar 2, 2025 · Updated: Mar 1, 2026

    Jump to Recipe

    Indulge in the magical sweetness of Lucky Charms Marshmallow Treats, the ultimate no-bake snack for St. Patrick's Day or any day you need a rainbow-filled pick-me-up. This quick and easy recipe transforms the iconic cereal into a delightful, chewy snack bar that both kids and adults will love. Whether you are looking for a festive holiday dessert or a simple after-school treat, these gooey marshmallow bars topped with a vibrant candy melt swirl are sure to be a hit.

    Lucky Charms Marshmallow Treats
    Jump to:
    • Why You'll Want to Make These Lucky Charms Marshmallow Treats
    • Ingredients - Here's What You'll Need
    • Steps to Make Lucky Charms Marshmallow Treats
    • Frequently Asked Questions
    • Recipe Tips and Tricks
    • Other Great St. Patrick's Day Desserts
    • Recipe

    Why You'll Want to Make These Lucky Charms Marshmallow Treats

    • No-Bake Simplicity: These treats come together on the stovetop and in the microwave, making them perfect for warm days or when you don't want to turn on the oven.
    • Perfect for St. Patrick's Day: The combination of green and white candy melts, gold sanding sugar, and lucky marshmallows makes them the ideal "wearing of the green" dessert.
    • Kid-Friendly Fun: Children love the colorful charms, and the recipe is easy enough for them to help with stirring and decorating.
    • Customizable: You can easily swap ingredients or add your own festive flair with different colored candy melts or sprinkles.

    Ingredients - Here's What You'll Need

    Ingredients for Lucky Charms Marshmallow Treats

    Steps to Make Lucky Charms Marshmallow Treats

    1. Line a 9x13-inch baking pan with parchment paper. Set aside until ready to use. Melt unsalted Irish butter in a large stock pot over low heat. Then, pour in the mini marshmallows.
    adding marshmallows to malted butter
    1. Stir constantly with a silicone spatula until the marshmallows have melted and the mixture is smooth and well combined.
    stirring marshmallow mixture
    1. Remove from the heat and pour in the Lucky Charms Cereal.
    adding Lucky Charms cereal to malted marshmallow mixture
    1. Quickly and carefully stir with a silicone spatula to coat all of the cereal with the marshmallow mixture. Take care not to crush the cereal when stirring.
    stirring cereal with marshmallow mixture
    1. Transfer the mixture to the prepared pan.
    transferring cereal mixture to prepared pan
    1. Spray your hands with non-stick cooking spray and gently press the mixture evenly into the pan. If you press too hard, you'll end up with hard marshmallow treats. Allow to cool for about 30 minutes before topping.
    pressing Lucky Charms Marshmallow treats into pan
    1. After the marshmallow treats have cooled, melt bright white and green candy melts, separately, in the microwave according to package directions. Pour the white candy melts over the top of the Lucky Charms treats.
    pouring white candy melts on top of marshmallow treats
    1. Then, use a silicone spatula to smooth into an even layer.
    soothing white candy melts into even layer
    1. Next, drizzle the green candy melts over the white.
    drizzling green candy melts over white
    1. Use a thin wooden skewer or knife to swirl the white and green together.
    swirling candy melts together
    1. Top with extra Lucky Charms Marshmallows and gold sanding sugar.
    topping with extra marshmallows and sanding sugar
    1. Allow the candy melts to harden completely, for about an hour. Then, remove from the pan and cut into squares.
    Lucky Charms Marshmallow Treats

    Whether you're prepping for a St. Patrick's Day party or just looking for a whimsical weekend project, these Lucky Charms Marshmallow Treats are a guaranteed crowd-pleaser. Their vibrant colors and gooey texture make them a standout addition to any dessert table. These bars are the perfect balance of sweet, creamy, and crunchy. Give them a try today and experience a little bit of magic in every bite.

    Lucky Charms Marshmallow Treats

    Frequently Asked Questions

    Can I use regular butter instead of Irish butter?

    Yes, regular unsalted butter is a perfectly fine substitute.

    How do I store Lucky Charms treats?

    Store them in an airtight container at room temperature to keep them soft and chewy.

    Can I make these gluten-free?

    While Lucky Charms cereal is generally considered gluten-free, always check the labels on your marshmallows and candy melts to ensure they meet your dietary needs.

    Why did my treats turn out hard?

    This usually happens if the marshmallows were melted at too high a temperature or if the mixture was pressed too firmly into the baking pan.

    Recipe Tips and Tricks

    • Finding Extra Marshmallows: Look for "Just Marshmallows" at stores like Target. If you can't find them, simply pick the charms out of a second box of cereal.
    • Keep it Soft: To ensure a chewy texture, always melt your marshmallows over low heat and never over-pack the mixture into the pan.
    • Re-melting Toppings: If your candy melts start to harden before you finish swirling, pop the pan into a 300°F oven for just a few minutes to soften them up again.
    • Use a Silicone Spatula: This makes stirring the sticky marshmallow mixture much easier and prevents sticking.

    Other Great St. Patrick's Day Desserts

    • pots of gold cookie cups
      Pots of Gold Cookie Cups: The Ultimate St. Patrick's Day Dessert
    • Baileys Irish Cream Chocolate Chip Cookies
    • Baileys Chocolate Cheesecake
      The Ultimate Baileys Chocolate Cheesecake Recipe
    • Quick and easy Irish Cream Pots de Creme,
      Irish Cream Pots de Crème
    • Irish Car Bomb Bundt Cake
      Irish Car Bomb Bundt Cake
    • Baileys chocolate dipped pistachio shortbread.
      Baileys Chocolate Dipped Pistachio Shortbread
    • Mini-green velvet bundtlets.
      Mini-Green Velvet Bundtlets
    • Irish Apple Cake

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    Lucky Charms Marshmallow Treats

    Lucky Charms Marshmallow Treats

    Susan Ensley
    Indulge in the magical sweetness of Lucky Charms Marshmallow Treats! Discover the iconic cereal turned into a delightful, chewy snack.
    5 from 3 votes
    Prevent your screen from going dark
    Print Recipe Pin Recipe
    Prep Time 15 minutes mins
    Cook Time 5 minutes mins
    Cooling Time 1 hour hr
    Total Time 1 hour hr 20 minutes mins
    Course Candy, Dessert, Snack, St. Patrick's Day
    Cuisine American, St. Patrick's Day
    Servings 12
    Calories 446 kcal

    Equipment

    • 9x13 inch baking pan
    • Parchment paper
    • non-stick cooking spray
    • large stockpot
    • Silicone Spatula
    • 2 Medium Size Microwave Proof Bowls

    Ingredients

    • ½ c Unsalted Irish Butter1
    • 10.5 oz Mini Marshmallows (about 6 cups)
    • 10.5 oz Lucky Charms Cereal (about 8 cups)
    • 12 oz Bright White Candy Melts
    • 8 oz Green Candy Melts
    • ½ c Lucky Charms Just Marshmallows2
    • 1 tbs Gold Sanding Sugar

    Instructions
     

    • Line a 9x13-inch baking pan with parchment paper. Set aside until ready to use. Melt unsalted Irish butter in a large stock pot over low heat. Then, pour in the mini marshmallows. Stir constantly with a silicone spatula until the marshmallows have melted and the mixture is smooth and well combined.
    • Remove from the heat and pour in the Lucky Charms Cereal. Quickly and carefully stir with a silicone spatula to coat all of the cereal with the marshmallow mixture, taking care not to crush the cereal.
    • Transfer the mixture to the prepared pan. Spray your hands with non-stick cooking spray and gently press the mixture evenly into the pan. If you press too hard, you'll end up with hard marshmallow treats. Allow to cool for about 30 minutes before topping.
    • After the marshmallow treats have cooled, melt bright white and green candy melts separately in the microwave according to the package directions. Pour the white candy melts over the top of the Lucky Charms treats. Then, use a silicone spatula to smooth into an even layer.
    • Next, drizzle the green candy melts over the white.
    • Use a thin wooden skewer or knife to swirl the white and green together.3 Top with extra Lucky Charms Marshmallows and gold sanding sugar.
    • Allow the candy melts to harden completely, for about an hour. Then, remove from the pan and cut into squares.
    • Yield 12 servings

    Tips/Notes

    1. You can substitute regular unsalted butter.
    2. I was able to find a bag of Lucky Charms Just Marshmallows at Target. If you can't find them, I recommend buying a second box of Lucky Charms and picking the marshmallows out to decorate the top with.
    3. If the candy melts begin to harden too quickly while swirling or topping with extra marshmallow and sanding sugar, pop the pan in a 300°F oven for a few minutes to melt again.

    Nutrition

    Calories: 446kcalCarbohydrates: 65gProtein: 4gFat: 20gSaturated Fat: 13gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.3gCholesterol: 26mgSodium: 217mgPotassium: 140mgFiber: 1gSugar: 47gVitamin A: 945IUVitamin C: 7mgCalcium: 167mgIron: 6mg
    Keyword Lucky Charms Marshmallow Treats
    Tried this recipe? Tag me today!Mention @PudgeFactor or tag #pudgefactor

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    5 from 3 votes (3 ratings without comment)

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