Five simple ingredients and just 15 minutes give you delicious Lucky Charm Rice Krispie Treats that’ll take you over the rainbow. A blend of crispy cereal and melted marshmallows yields sweet, crunchy bars that are perfect for St. Patrick’s Day.
What are Lucky Charms Rice Krispie Treats?
These treats combine classic Rice Krispie texture with the colorful marshmallows from Lucky Charms for a magically tasty twist. They’re chewy, slightly sticky, sweet, and delightfully crunchy—an easy festive treat to share.
Ideal for St. Patrick’s Day, this recipe is quick, approachable, and uses just a few pantry staples. If you enjoy cereal-based desserts, these bars are a fun, crowd-pleasing option.
Recipe Ingredients
- Rice Krispies: The crisp base that gives these bars their light crunch.
- Lucky Charms: Adds color, texture, and the signature marshmallows. Reserve about ¾ cup of marshmallows and cereal separated to press on top for visual appeal.
- Mini marshmallows: A 16 oz bag melts evenly and helps bind the cereal together—mini size recommended.
- Butter: One stick helps melt the marshmallows and adds richness. Salted, unsalted, or vegan butter will all work.
- Pinch of salt (optional): Enhances flavor if desired.
See the recipe card below for exact measurements and full directions.
Substitutions and Variations
Ways to customize these treats:
- Cereal: Use only Lucky Charms for more marshmallow-forward bars, or swap Rice Krispies for another cereal such as Chex or Captain Crunch for a different texture.
- Marshmallows: Rainbow or flavored mini marshmallows add extra color and fun.
- Fat: Substitute coconut oil for butter to make them dairy-free, or use a vegan butter alternative.
- Extras: Stir in a splash of vanilla or dip the bottoms in melted white chocolate for a fancier finish. Sprinkle festive clover shapes on top for St. Patrick’s Day.
How to Make This Recipe
1. Measure and separate about ¾ cup of Lucky Charms so you have the marshmallows ready to press on top later. Heat a large pot over medium-low heat, add the butter, and stir until melted without browning.
2. Add the mini marshmallows to the melted butter and stir until about 75% melted. Remove the pot from heat to finish melting off the residual heat.
3. Gently fold in the Rice Krispies and 3 cups of Lucky Charms cereal, plus the reserved Lucky Charms cereal from the separated portion and a pinch of salt if using. Mix just until evenly coated—avoid over-stirring, which can make the mixture stiff.
4. Spray a 9×13 pan with cooking spray or line it with parchment. Transfer the cereal mixture to the pan and spread it evenly with a spatula.
5. Lightly press the reserved Lucky Charms marshmallows and cereal on top for a decorative finish. Avoid pressing too firmly—pressing lightly keeps the bars airy instead of overly dense.
6. Chill the pan for about 30 minutes to set. Once firm, cut into bars and serve.
Expert Tips
- Do not press the mixture hard into the pan—light, even pressure preserves a tender texture.
- Work quickly while the marshmallows are warm so they coat the cereal evenly; if the mixture cools, it becomes harder to combine.
- For an extra festive touch, add green sprinkles or clover-shaped decorations before the treats set.
Serving suggestions
Build a festive St. Patrick’s Day spread by pairing these bars with other themed treats or simple beverages. They’re great on a dessert table or packed as a grab-and-go snack for parties.
Recipe FAQs
Store at room temperature in an airtight container for up to 3–5 days, or refrigerate for slightly longer freshness. They can also be frozen for up to 3 months; thaw at room temperature before serving. Note: crispness decreases over time.
These use Lucky Charms cereal in addition to (or instead of) Rice Krispies, and incorporate the colorful Lucky Charms marshmallows for extra sweetness and visual appeal.
Use a pizza cutter or a large knife sprayed with cooking spray and cut after the bars have fully set to get clean edges.
You can, but results may vary—texture and flavor can change with different brands or formulations.
More Recipes You’ll Love
Love this recipe? Please leave a 5-star rating and a comment in the recipe card below. Thanks for visiting!
Lucky Charm Rice Krispie Treats
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
- ¾ cup Lucky Charms (marshmallows and cereal separated)
- Pinch of salt (optional)
Instructions
- Measure ¾ cup of Lucky Charms and separate the marshmallows from the cereal, setting the marshmallows aside for topping.
- Heat a large pot over medium-low heat. Add the butter and stir until melted.
- Add the mini marshmallows and stir until about 75% melted. Remove the pot from heat to finish melting.
- Fold in the Rice Krispies and 3 cups Lucky Charms, plus the reserved Lucky Charms cereal. Add a pinch of salt if desired. Stir gently until evenly coated—do not overmix.
- Transfer the mixture to a greased 9×13 pan or one lined with parchment. Spread evenly, then press the reserved Lucky Charms marshmallows and cereal on top.
- Chill for about 30 minutes to set. 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 to store these treats in the refrigerator, though they’ll keep at room temperature for a few days. For best texture, serve the day you make them. Freeze for longer storage.
Use a sprayed pizza cutter or large knife for clean slices after bars have fully set.
Separating the Lucky Charms marshmallows is optional but gives a bright, decorative finish.
Looking for this in MyFitnessPal?
Search “A Paige Of Positivity” and find the entry for LUCKY CHARM RICE KRISPIE TREATS. For the most accurate nutrition information, enter each ingredient into your food diary.
I’d love to hear your thoughts in the comments below—tell me what you loved or say hi!