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Lucky Charms Rice Krispie Treats

Need the perfect celebratory treat for St Patrick’s Day? These Lucky Charms Rice Krispie Treats are the perfect addition. This classic treat is also elevated with delicious browned butter and sweetened condensed milk… No Bake and 15 minutes of work, they are effortless and delicious!

Lucky Charms Rice Krispie Treat on a plate surrounded by cereal

St Patrick’s Day is an under-celebrated holiday if you don’t have children, but it doesn’t have to be! Whether or not you have kids, you can enjoy St Patrick’s Day. And the easiest way to enjoy a holiday? Dessert 😉 

I have some delicious St Patrick’s Day desserts, including Lucky Charms Cookies or these Easy St Patrick’s Day Cookies! But if you’re in the mood for a no-bake, hard to mess up dessert, you’ve come to the right place. These Lucky Charms Rice Krispie Treats are the perfect solution! 

Normal Rice Krispie Treats combine with Lucky Charms for this festive and fun delicious dessert. Simply add the Lucky Charms cereal into your Rice Krispies bowl and then mix in the Lucky Charms Marshmallows. You’ll love this sweet treat and how easy it is to make. 

Why Make this Recipe

One large block of St Patrick's Day Rice Krispie Treats
  1. Simple Assembly: Sometimes baking can be intimidating to people because of the chemistry behind it that makes baked goods tough to master. Luckily, this recipe is easy to put together with no guess-work required! 
  2. Festive Treat: Whether you need a St Patrick’s Day treat for a child’s classroom party, a home gathering, or just to romanticize your life, this recipe is perfect! The Lucky Charms cereal adds the perfect leprechaun touch to your dessert. 
  3. Lucky Charms Marshmallows: Need I say more? We’ve all eaten the marshmallows right out of the box…. Now you have a more socially-appropriate way to enjoy them 😉 

What Else Can I Serve for St Patrick’s Day? 

If you want a traditional Irish meal to celebrate your St Patrick’s Day, check out these other options from my sister site, The Foreign Fork, where I am cooking authentic meals from every country in the world: 

What Do I Need to Make this Recipe? 

Ingredients 

Labeled ingredient shot
  1. Lucky Charms Cereal: You will need to separate the cereal from the marshmallows. Do NOT pour the hot marshmallow mixture into the cereal bowl with the Lucky Charms marshmallows still mixed into the cereal. Your lucky Charms marshmallows will melt and will mess up the look of your treat! 
  2. Mini Marshmallows: Use fresh marshmallows as they will melt better. You can also use jumbo marshmallows if preferred.
  3. Butter: This recipe calls for browning the butter to add an extra hit of flavor to your Rice Krispie treats, but feel free to omit this step if you don’t want to take the time to brown your butter. In that case, simply melt the butter, then add the marshmallows. 
  4. Sweetened Condensed Milk: This is not a standard ingredient in Rice Krispie Treats, but I love the flavor it gives! I highly recommend it.
  5. Vanilla Extract: This adds just a touch of sweetness. Feel free to sub out any other fun extracts you want, including cake batter flavor or mint. 
  6. Lucky Charms Marshmallows: I picked the marshmallows out of the cereal box, but they also sell bags of JUST the Lucky Charms marshmallows!

Tools

  1. 9×9 Baking Dish: You can use glass or nonstick. This makes for very thick rice krispie treats. Feel free to use a 9×13 pan for more plentiful, thinner treats!
  2. Pot: Use a pot that can fit 10 oz of mini marshmallows 

How to Make this Recipe

Step 1: Prepare

Bowl of Lucky Charms and Rice Krispies combined

Fill a large bowl with the Rice Krispies cereal and the Lucky Charms Cereal (but not the lucky charms marshmallows). Set aside.

Spray a 9×9 baking dish with nonstick spray. Set aside. 

 Step 2: Make the Marshmallow Mixture 

Small pot filled with mini marshmallows
Small pot filled with melted marshmallows

In a large pot add the unsalted butter. Stir the butter continuously over low heat for about 10 minutes until the foam subsides, the milk solids gain a brown color, and the butter begins to smell nutty.

You have now browned your butter! If you want a faster recipe, you can skip the browning step and simply melt the butter and move on to step 4 right away.

Add the 10 ounce bag of marshmallows to the pot and continuously stir until they completely melt.

Add in the vanilla extract and sweetened condensed milk, stirring everything once again until combined.

Step 3: Make the Lucky Charms Rice Krispie Treats

Large mixing bowl filled with cereal and melted marshmallows
Rice Krispie Treat mix in a mixing bowl
Rice Krispies pressed into an 8x8 pan

Remove the marshmallow mixture from the heat and pour over the bowl filled with the cereals. Use a large wooden spoon or rubber spatula to fold the ingredients together until evenly distributed.

While the mixture is still warm, add the Lucky Charms marshmallows and fold the two together again.

Transfer the mixture to the prepared baking dish and press into the pan evenly. Let the treats sit at room temperature for at least an hour before eating.

Cut and enjoy or store in a ziploc bag or a tightly sealed container for later. Enjoy! 

Expert Tips

plate with rice krispies stacked on top of each other
  • Make sure to spray your hands or spoon with nonstick spray before trying to press your Lucky Charms Rice Krispie treats into the pan. This will keep the mess from sticking all over your fingers! 
  • Make sure to cook your marshmallow mixture on low heat. HIgh heat could lead to a burnt marshmallow mixture! 
  • Set aside some extra Lucky Charms marshmallows that you can press into the top of the treats after you have put them in the pan. This will add some extra decoration to the top. 
  • Make sure not to cook your marshmallow mixture on the stove for too long. Too long of a cook time will lead to chewy treats! 
  • Work quickly! The closer your treats get to room temperature, the harder they are to press into the pan. Don’t let them come to room temperature! 

How to Cut Rice Krispie Treats

Lucky Charms Rice Krispie treats cut into squares

It can be hard to cut your Rice Krispie treats perfectly considering they are such a sticky treat. But there are a few tips to make sure that you do your best! 

  1. Temperature: Make sure to allow the Lucky Charms Rice Krispie treats to chill fully before cutting into them or they will be a mess! You can even chill them in the fridge if desired.
  2. Cutting Board: If possible, remove your entire block of Rice Krispies from the pan at once. If you use nonstick spray, you should be able to use your hands to just remove the entire thing! Transfer this to parchment paper or a cutting board so that you can get an even cut. 
  3. Knife: I like to use a large knife that will cut across almost the entire pan at once! 
  4. Nonstick Spray: Spray your knife with nonstick spray so that the Rice Krispie treat mixture does not stick to the knife. 

Adaptations

Feel free to adapt this recipe any way that you think sounds delicious! Here are some ideas: 

  • White chocolate chips
  • Sprinkles 
  • Different extracts
  • Drizzle of melted chocolate on top
  • Other cereals like cheerios, frosted flakes, or Chex. 

Recipe FAQs

St Patrick's Day Rice Krispie on a plate surrounded by ingredients
How to Store Leftovers

You can store leftovers in an airtight container at room temperature. They will stay good for up to 3 days. 

What are Lucky Charms Rice Krispie Treats? 

Lucky Charms Rice Krispie treats are very similar to normal rice Krispie treats: Rice Krispie cereal mixed with melted marshmallows and cooled to make a no-bake dessert. In this iteration, we are also adding Lucky Charms cereal and Lucky Charms marshmallows for a festive dessert perfect for St Patrick’s Day or any day of the year! 

Can This Recipe be Made Vegan? 

While you can use vegan butter, please keep in mind that marshmallows do contain gelatin, which means that they are not vegan. 

Are Lucky Charms Rice Krispie Treats Gluten Free?

Lucky Charms cereal is gluten free, but unfortunately Rice Krispies are not! To make this treat gluten free, try another brand of puffed rice cereal. 

Did you enjoy this recipe? If so make sure to check out these other recipes I picked out just for you: 

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Lucky Charms Rice Krispie Treats on a plate topped with Lucky Charms marshmallows.

Lucky Charms Rice Krispie Treats

Need the perfect celebratory treat for St Patrick’s Day? These Lucky Charms Rice Krispie Treats are the perfect addition. This classic treat is also elevated with delicious browned butter and sweetened condensed milk… No Bake and 15 minutes of work, they are effortless and delicious!
5 from 1 vote
Print Pin Rate
Course: Dessert
Prep Time: 15 minutes
Cook Time: 10 minutes
Total Time: 25 minutes
Servings: 16
Calories: 152kcal

Equipment

  • 9×9″ Baking Dish
  • Large Pot

Ingredients

  • 4 cups Rice Krispies cereal
  • 2 cups Lucky Charms cereal with marshmallows removed
  • 5 tablespoons unsalted butter
  • 10 ounce bag mini marshmallows
  • ½ teaspoon vanilla extract
  • ¼ cup sweetened condensed milk
  • 1 ½ cups Lucky Charms dehydrated Marshmallows
  • ½ teaspoon salt

Instructions

  • Fill a large bowl with the Rice Krispies cereal and the Lucky Charms Cereal (but not the lucky charms marshmallows). Set aside.
  • Spray a 9×9 baking dish with nonstick spray. Set aside.
  • In a large pot add the unsalted butter. Stir the butter continuously over low heat for about 10 minutes until the foam subsides, the milk solids gain a brown color, and the butter begins to smell nutty. You have now browned your butter! If you want a faster recipe, you can skip the browning step and simply melt the butter and move on to step 4 right away.
  • Add the 10 ounce bag of marshmallows to the pot and continuously stir until they completely melt.
  • Add in the vanilla extract and sweetened condensed milk, stirring everything once again until combined.
  • Remove the marshmallow mixture from the heat and pour over the bowl filled with the cereals. Use a large wooden spoon or rubber spatula to fold the ingredients together until evenly distributed.
  • While the mixture is still warm, add the Lucky Charms marshmallows and fold the two together again.
  • Transfer the mixture to the prepared baking dish and press into the pan evenly. Let the treats sit at room temperature for at least an hour before eating.
  • Cut and enjoy or store in a ziploc bag or a tightly sealed container for later. Enjoy!

Notes

Recipe copyright The Domestic Spoon. For educational or personal use only. 
  • Lucky Charms Cereal: You will need to separate the cereal from the marshmallows. Do NOT pour the hot marshmallow mixture into the cereal bowl with the Lucky Charms marshmallows still mixed into the cereal. Your lucky Charms marshmallows will melt and will mess up the look of your treat! 
  • Mini Marshmallows: Use fresh marshmallows as they will melt better. You can also use jumbo marshmallows if preferred.
  • Butter: This recipe calls for browning the butter to add an extra hit of flavor to your Rice Krispie treats, but feel free to omit this step if you don’t want to take the time to brown your butter. In that case, simply melt the butter, then add the marshmallows. 
  • Sweetened Condensed Milk: This is not a standard ingredient in Rice Krispie Treats, but I love the flavor it gives! I highly recommend it.
  • Vanilla Extract: This adds just a touch of sweetness. Feel free to sub out any other fun extracts you want, including cake batter flavor or mint.
  • Lucky Charms Marshmallows: I picked the marshmallows out of the cereal box, but they also sell bags of JUST the Lucky Charms marshmallows!
  • Make sure to spray your hands or spoon with nonstick spray before trying to press your Lucky Charms Rice Krispie treats into the pan. This will keep the mess from sticking all over your fingers! 
  • Make sure to cook your marshmallow mixture on low heat. HIgh heat could lead to a burnt marshmallow mixture! 
  • Set aside some extra Lucky Charms marshmallows that you can press into the top of the treats after you have put them in the pan. This will add some extra decoration to the top. 
  • Make sure not to cook your marshmallow mixture on the stove for too long. Too long of a cook time will lead to chewy treats! 
  • Work quickly! The closer your treats get to room temperature, the harder they are to press into the pan. Don’t let them come to room temperature!

Nutrition

Serving: 1g | Calories: 152kcal | Carbohydrates: 28g | Protein: 2g | Fat: 4g | Saturated Fat: 3g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 1g | Trans Fat: 0.1g | Cholesterol: 11mg | Sodium: 105mg | Potassium: 43mg | Fiber: 0.3g | Sugar: 16g | Vitamin A: 747IU | Vitamin C: 6mg | Calcium: 40mg | Iron: 3mg
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