With just five ingredients and 15 minutes, you can make delicious Lucky Charm Rice Krispie Treats that’ll take you over the rainbow. Crispy cereal and melted marshmallows combine into sweet, crunchy bars—perfect for St. Patrick’s Day or any time you want a fun, nostalgic treat.
What are Lucky Charms Rice Krispie Treats?
These treats put a magical twist on classic Rice Krispie treats by incorporating Lucky Charms cereal and its colorful marshmallows. The result is chewy, sweet, and crunchy bars that are as fun to eat as they are to make.
They’re quick, simple, and require only a few pantry staples—ideal for last-minute St. Patrick’s Day snacks or an anytime treat to delight kids and adults alike.
Recipe Ingredients
- Rice Krispies: The crisp base that provides texture.
- Lucky Charms: Use the cereal and reserve extra marshmallows to press on top for a festive finish.
- Mini marshmallows: They melt more evenly than large marshmallows and give the treats the classic sticky chew.
- Butter: Helps melt the marshmallows and adds richness. Salted or unsalted both work.
- Pinch of salt (optional): Enhances the sweetness.
See the recipe card below for exact measurements and full nutrition information.
Substitutions and Variations
Here are a few simple ways to change things up:
- Cereal: Use all Lucky Charms for a uniform texture, or swap Rice Krispies for Cheerios, Chex, or another crisp cereal.
- Marshmallows: Rainbow marshmallows or marshmallow-only mixes add extra color.
- Fat: Substitute coconut oil or a vegan butter alternative if desired.
- Extras: Stir in vanilla extract for extra flavor, or dip the bottoms of the cooled bars in melted white chocolate to mimic store-bought marshmallow bars.
How to Make This Recipe
1. Heat a large pot over medium-low heat. Add butter and melt, stirring frequently to prevent burning.
2. Add the mini marshmallows to the melted butter and stir until about 75% melted. Remove the pot from heat.
3. Add the Rice Krispies, most of the Lucky Charms cereal, and a pinch of salt (if using). Stir gently to combine—don’t overmix or the mixture will become too stiff.
4. Spray or line a 9×13-inch pan with parchment. Transfer the cereal mixture to the pan and spread evenly.
5. Press the reserved Lucky Charms marshmallows on top for a festive look. Chill the pan for about 30 minutes to set.
6. Once set, cut into bars and serve.
Expert Tips
- Don’t pack the mixture firmly into the pan—leave it light so the treats stay tender and chewy.
- Work quickly after the marshmallows melt so they coat the cereal before cooling and stiffening.
- For extra festivity, sprinkle clover-shaped sprinkles or more marshmallows on top before the treats set.
Serving suggestions
Serve these bars alongside other St. Patrick’s Day treats or enjoy them with a cold glass of milk. They pair well with mint-themed desserts or other colorful cereal-based sweets for a themed spread.
Recipe FAQ
Store them in an airtight container at room temperature for up to 3–5 days; refrigeration can extend freshness but may soften the crispness. They also freeze well for up to 3 months—thaw before serving.
These use Lucky Charms cereal (and extra marshmallows) in addition to Rice Krispies, adding colorful marshmallows and a distinct flavor to the classic treat.
A lightly oiled pizza cutter or a large knife sprayed with cooking spray works well. Make sure the bars are fully cooled and set before cutting to avoid sticking.
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Lucky Charm Rice Krispie Treats
Five ingredients and just 15 minutes yields sweet, crunchy Lucky Charm Rice Krispie Treats—an easy and festive snack.
Equipment
- Sauce pot
- Rubber spatula
- Measuring cups
- 9×13 pan
- Parchment paper or cooking spray
Ingredients
- 1 stick butter
- 1 (16 oz) bag mini marshmallows
- 2 cups Rice Krispies
- 3 cups Lucky Charms
- 3/4 cup Lucky Charms (marshmallows and cereal separated for topping)
- Pinch salt, optional
Instructions
- Measure 3/4 cup of Lucky Charms and separate the marshmallows from the cereal; set aside.
- Heat a large pot over medium-low heat. Melt the butter, stirring to prevent burning.
- Add the mini marshmallows and stir until about 75% melted. Remove from heat.
- Pour in the Rice Krispies and 3 cups Lucky Charms cereal (reserve the separated cereal and marshmallows). Add a pinch of salt if desired and gently stir to combine without overmixing.
- Spray or line a 9×13 pan with parchment. Transfer the mixture and spread evenly.
- Press the reserved Lucky Charms marshmallows on top. Chill for about 30 minutes, then cut into bars and enjoy.
Nutrition
Serving: 1 bar | Calories: 204 kcal | Carbohydrates: 31 g | Protein: 2 g | Fat: 8 g | Sugar: 21 g
Notes
I prefer storing these treats in the refrigerator, though room temperature is fine for a few days. They keep best if eaten within a few days; freeze for longer storage. If you’d like cleaner, decorative bars, press extra marshmallows on top before the treats set. This recipe hasn’t been tested with off-brand cereals, which may alter texture or flavor.
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