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Home » Recipes » holiday treats

shamrock Rice Krispie Treats

Modified: Nov 2, '24 · Published: Mar 4, '20 · By: Meaghan Mountford · Commission earned on paid or sponsored links.

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These adorable shamrock Rice Krispie Treats will help you celebrate the luck of the Irish. Scroll to the end for printable recipe and video how-tos.

overhead image of St. Patrick's Day Shamrock Rice krispie treats

shamrock Rice Krispie treats

Shamrock Rice Krispie Treats are so cute and easy for St. Patrick's Day! Pack them in lunch boxes, serve during classroom parties, or make them just for fun.  Of course, if you're short on time, these treats don't need the expressions, but gosh they are leprechaun-adorable.

Here, we use our BEST Rice Krispie treat recipe, tint it green, and cut out shamrocks. That's it! For perfect cereal treats every time, be sure to check out our FAQ page!

 Shamrock Rice krispie treats

how to make St. Patrick's Day treats

Note below that you'll need a 3-inch shamrock cookie cutter for these green cereal treats!

  • Spray a large bowl with cooking spray or rub with butter or Crisco. Add 4 ⅔ cups Rice Krispies cereal.  Line a baking tray with parchment paper and set aside.
  • In a large, microwave-safe bowl, place  4 tablespoons of salted butter and 10 ounces of marshmallows. Microwave for 1 minute on high. Stir, and microwave for at additional 30 second intervals, if needed. Stir until very smooth.
    • Be sure to keep your eye on the marshmallows! They will puff up.
    • 10 ounces of marshmallows equals 6 cups of mini marshmallows (usually 1 bag) OR about 40 regular marshmallows.
  • Add a few drops of green food coloring and stir well. Add drops of coloring until the desired shade is achieved.

green marshmallows and butter for Shamrock Rice krispie treats

  • Pour the marshmallow mixture over the cereal and stir very well. TIP: I use a spatula coated in cooking spray to make this process easier! Transfer to the prepared baking tray.
  • Flatten gently in a rectangle or circle shape (it doesn't need to be perfect) that is ¾-inch thick and roughly 10-inches by 12-inches. Chill until well set, about 2 hours. You may put in the fridge to speed things along.
  • Use the shamrock cutter to cut out the treats as closely together as possible. You should get 10 to 12 treats.

Shamrock Rice krispie treats on baking tray

  • If desired, use a tube of black frosting to pipe a smile. Use the frosting to adhere jumbo candy eyes.
    • I prepared my royal icing, tinted black, with a decorating bag and size 3 tip, but you can use store-bought black frosting from the supermarket since you only need a little bit.

decorating Shamrock Rice krispie treats

overhead image of green Shamrock Rice krispie treats

Check out the video how-tos!

printable recipe

shamrock Rice Krispie Treats for St. Patrick's Day

shamrock rice krispie treats

Meaghan Mountford
Cute and easy, smiling, green Shamrock Rice Krispie Treats for St. Patrick's Day.
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 1 minute min
Chill for 2 hours hrs
Total Time 2 hours hrs 21 minutes mins
Course Dessert
Cuisine American
Servings 10
Calories 142 kcal

Equipment

  • cooking spray
  • parchment paper
  • 3-inch shamrock cookie cutter
  • green food coloring
  • jumbo candy eyes (optional)
  • black tube of icing (optional)

Ingredients
  

  • 4 ⅔ cups Rice Krispies cereal
  • 10 ounces marshmallows about 40 regular OR 6 cups of mini marshmallows
  • 4 tablespoons salted butter

Instructions
 

  • Line a baking tray with parchment paper and set aside. Spray a large bowl with cooking spray and add the cereal. Set aside.
  • In a microwave-safe bowl, place the marshmallows and butter. Microwave for 1 minute on high. Stir very well until the mixture is smooth. Add green food coloring and stir. Add additional coloring until desired shade is achieved.
  • Pour the marshmallow mixture over the cereal and stir very well until the cereal is evenly coated. TIP: Spray the spatula with cooking spray for easy mixing.
  • Scrape the treats onto the prepared baking tray. Spread and flatten evenly to ¾-inch thickness. The shape will be about 10-inches by 12-inches.
  • Let cool 2 hours.
  • Use the shamrock cutter to cut out shamrocks.
  • Optional: To decorate the shamrocks, pipe a black smile. Use the black icing to adhere candy eyes. Let set.
Keyword shamrock rice krispie treats

four Shamrock Rice krispie treats

more St. Patrick's Day fun food ideas

  • Find a roundup of 30 St. Patrick’s Day food ideas here and 40 rainbow food ideas here.
  • Find more awesome St. Patrick’s Day food ideas HERE, including cupcakes, candies, cookies, and more.
  • Taste of Home has a green food collection here.

more Rice Krispie Treat ideas

Here are a couple more ideas for St. Patrick's Day!

Lucky charms treats

Lucky Charms treats 

rainbow rice krispie treats

rainbow rice krispie treats 

Froot Loops cereal treats

Froot Loops treats 

More holiday treats

  • Snowflake Rice Krispie Treats decorated with blue and white chocolate.
    Snowflake Rice Krispie Treats
  • Christmas Rice Krispie Treats for the holiday.
    Christmas Rice Krispie Treats
  • Christmas ornament Rice Krispie Treats
    ornament Rice Krispie Treats
  • eggnog Rice Krispie Treats recipe image.
    Eggnog Rice Krispie Treats

Comments

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    Recipe Rating




  1. Briana Jeota says

    March 26, 2020 at 12:25 am

    Many thanks for this fun recipe.

    Reply
  2. Britany S. says

    April 05, 2020 at 9:10 am

    These are so darn cute!!!

    Reply
Beth and Meaghan from How To Make Cereal Treats

Meet Beth and Meaghan. We are recipe developers, food photographers, and cookbook authors who love sharing creative cereal treat recipes with you.
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Beth and Meaghan from How To Make Cereal Treats

Meet Beth and Meaghan. We are recipe developers, food photographers, and cookbook authors who love sharing creative cereal treat recipes with you.
Read more about us →

popular recipes

  • BEST Rice Krispie Treats Recipe You'll Ever Try!
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Upcoming Holiday Recipes

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How To Make Rice Krispie Treats

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  • Bags of assorted Rice Krispie Treats and cereal treats stacked on a freezer shelf.
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  • Marshmallows drawing with cute smiley faces.
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  • cut Rice Krispie Treats using cookie cutters to make shapes
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Buy our cookbook

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