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No Bake Lucky Charms Treats with spatula in pan
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5 from 5 votes

Lucky Charms Treats

Quick and Easy Marshmallow Treats Stuffed with Lucky Charms! A fun, easy treat for St. Patrick's Day!
Prep Time12 mins
Cook Time3 mins
Total Time15 mins
Course: Dessert
Cuisine: American
Servings: 20 bars
Calories: 175kcal
Author: Julie Evink


  • 8 ½ c. Lucky Charms cereal 1/4 marshmallows reserved
  • 8 Tbsp butter
  • 10 c. mini marshmallows divided
  • 1 tsp vanilla extract
  • Pastel Sprinkles


  • Spray a 9’’ x 13’’ pan with non-stick spray or line with heavy duty aluminum foil greased with non-stick spray. If using foil let it drape over the sides of the pan for easy removal of bars.
  • In a large bowl measure out Lucky Charms. Take out 1/4 c. of the marshmallows from the cereal and set aside.
  • Remove two cups of mini marshmallows and set aside.
  • Place the butter slabs and remaining mini marshmallows in a large microwave safe container. Microwave for 2 minutes. Remove and stir until butter and marshmallows are melted and combined. Add vanilla and stir until combined.
  • Quickly mix cereal into the melted marshmallows and stir until it is combined. Add reserved mini marshmallows and stir until they are softened and partially melted. You do not want them to completely melt as the provides those delicious pockets of marshmallow goo.
  • Press mixture into prepared pan. You can butter your fingers to help press them into the pan with less mixture sticking with to them or use the butter wrapper to push the mixture into the pan. Damp fingers also work to help press the mixture into the pan without getting it stuck to your fingers.
  • Take the 1/4 c. reserved Lucky Charms marshmallows and press into the top of the bars. Then sprinkle with sprinkles if desired.
  • Let cool at room temperature for at least a hour.
  • If you used foil you can lift the treats onto cutting board and cut into pieces. Otherwise cut them in the pan.
  • Store in air tight container.


  • Line Pan – To make it easy to remove the bars, line your baking dish with enough tin foil so you have extra that hang over the edges of the pans. That way, you can grab it and lift the bars out in one whole piece before you slice them. If you skip lining it make sure it’s butter or sprayed with non-stick spray.
  • Use Fresh Marshmallows – Marshmallows that have been around too long harden and if you if use them to make these treats your bars won’t be chewy they’ll be rock hard!
  • Use PURE VANILLA EXTRACT – Pure vanilla extract is made with real vanilla, so don’t substitute regular vanilla extract otherwise you won’t get that wonderful natural vanilla flavor.
  • Do not press firmly into pan – When you press the bar mixture into the pan don’t press too hard otherwise your bars will be too dense and too chewy. Lightly press it in so that there is still plenty of air in the bars.
  • Use wet hands or buttered hands to press into pan – If you’ve ever tried to press sticky marshmallows and cereal with your hands you know you end up with more stuck to your hands than in the pan! To make it easier, butter or wet your hands with water when you handle the mixture so it goes in the pan and doesn’t stick to you.


Serving: 1g | Calories: 175kcal | Carbohydrates: 177g | Protein: 12g | Fat: 7g | Saturated Fat: 3g | Trans Fat: 1g | Cholesterol: 12mg | Sodium: 738mg | Potassium: 577mg | Fiber: 18g | Sugar: 85g | Vitamin A: 2654IU | Calcium: 61mg | Iron: 27mg