If you’re craving a sweet, nostalgic snack that’s both quick and fun to make, you’ll love this Lucky Charms Marshmallow Treats Recipe. It’s a gooey, colorful twist on classic marshmallow cereal treats — perfect for kids and big kids alike.

The image shows a stack of three square cereal treats made from a light beige crispy cereal mixed with colorful fruity cereal pieces, creating small splashes of blue, red, yellow, and green throughout. The treats have a glossy, slightly sticky texture holding the cereal together. They are placed on a white plate with a smooth surface, and the edges of the treats are slightly rounded. Nearby, there is another white plate holding a single cereal treat with some small cereal crumbs around it. To the right, a tall clear glass filled with white milk has a bright pink straw inside. The background features a white marbled surface that contrasts softly with the colors of the food. Photo taken with an iphone --ar 2:3 --v 7

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Why You'll Love This Recipe
Ingredients & Why They Work
Make It Your Way
Step-by-Step: How I Make Lucky Charms Marshmallow Treats Recipe

Why You'll Love This Recipe

I honestly make these Lucky Charms Marshmallow Treats whenever I want to bring a smile to the table—everyone loves that perfect combo of chewy marshmallow and crunchy cereal bits.

Super quick and easy: Ready in just 15 minutes total, including prep and cooking time.
Kid-friendly fun: It’s a DIY treat kids can help make, stirring up excited taste testers.
Perfect sweet snack: Great for parties or anytime you want a bright, nostalgic pick-me-up.
Minimal ingredients: Just three simple pantry staples you probably already have on hand.

Ingredients & Why They Work

Before you get started, here’s a quick rundown of the key ingredients and why they’re essential. Grab good-quality mini marshmallows and your favorite box of Lucky Charms to make these treats extra special.

Flat lay of a pile of colorful Lucky Charms cereal with visible marshmallow shapes, a small white ceramic bowl filled with mini white marshmallows, a few cubes of fresh yellow butter arranged neatly, and another small white ceramic bowl containing melted butter liquid, all placed symmetrically on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997

Mini marshmallows: They melt down smoothly to create that classic sticky, gooey texture that holds everything together.
Butter: Adds richness and helps melt the marshmallows without burning, giving your treats a silky finish.
Lucky Charms cereal: The star of the show, bringing colorful marshmallow shapes and crunchy texture for a playful twist on classic treats.

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Note: You'll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Make It Your Way

One of the best things about this Lucky Charms Marshmallow Treats Recipe is how easy it is to make it your own! Whether you want to add a personal twist or accommodate dietary needs, these treats are super adaptable and still turn out delicious.

Dairy-Free Delight: I swapped the butter for margarine once to make these treats dairy-free, and they still came out perfectly gooey and just as tasty. A simple switch that works great for those avoiding dairy!
Extra Crunch: Sometimes I mix in a handful of chopped nuts or even some crushed pretzels for an added crunch. It’s a fun way to give a little texture surprise in every bite.
Seasonal Swaps: Around Halloween or St. Patrick’s Day, I like to toss in themed sprinkles or swap Lucky Charms for a similarly colorful cereal that matches the holiday vibe.
Chocolate Lovers: For a chocolatey twist, stir in mini chocolate chips right after mixing in the cereal but before spreading it in the pan. It adds just the right touch of sweetness!

Step-by-Step: How I Make Lucky Charms Marshmallow Treats Recipe

The image shows two white bowls on a white marbled surface. The larger bowl at the bottom is filled with a thick layer of small, white marshmallows, topped in the center with a single rectangle of pale yellow butter. Above it to the right, a smaller bowl holds a colorful cereal mix with light brown rings and bright marshmallow shapes in blue, pink, yellow, and green. To the left of the bowls lies a wooden spoon on a gray and white striped cloth. A few cereal pieces are scattered nearby on the white marbled surface. photo taken with an iphone --ar 2:3 --v 7

Step 1: Melt the Butter to a Glossy Pool

Start by placing 4 tablespoons of butter in a pan over low heat. Take your time here—low and slow is the key so the butter melts evenly without browning. Once fully melted, you’ll see a shiny, golden pool that's ready to welcome your marshmallows.

Step 2: Stir in Mini Marshmallows Until Silky Smooth

Add 5 cups of mini marshmallows directly to the melted butter. Keep your heat low and stir frequently; patience pays off as the marshmallows gradually melt into a smooth, glossy mixture. You can tell it’s ready when there are no more lumps and the texture is creamy and thick.

Step 3: Carefully Fold in Lucky Charms Cereal

Now for the fun part—add 6 cups of Lucky Charms cereal to your marshmallow mixture. Gently fold and stir, making sure every oat and colorful marshmallow charm is coated in that sweet, melty goodness. Be careful not to crush the cereal; you want each bite to have that classic crunch.

Step 4: Prepare Your Pan for Easy Removal

Grab a 9x13 inch pan and give it a quick spritz with non-stick spray. This little step makes all the difference when it’s time to slice and serve, helping your treats pop right out without sticking or falling apart.

Step 5: Press and Spread the Mixture Evenly

Spoon your Lucky Charms marshmallow mixture into the prepared pan. Use a spatula or your hands lightly greased with butter to press it down firmly and level it out. Getting a nice even surface helps the treats set evenly and makes for perfect, easy-cut squares.

Step 6: Cool, Set, and Slice into Fun-Sized Treats

Let your pan rest at room temperature for 1 hour to allow the treats to cool and harden fully. This cooling time is essential so they hold their shape when you cut into them. Once set, slice into about 12 servings and enjoy these irresistible, kid-friendly snacks!

Lucky Charms Marshmallow Treats Recipe