Lucky Charms Cookies

Melissa

By: Melissa

Updated: March 4, 2026

These soft and chewy Lucky Charms cookies might not be authentically Irish, but they're deliciously adorable. With the iconic cereal marshmallows baked right in, these dairy free cookies are a festive, kid-friendly St. Patrick's Day treat that comes together in just 30 minutes!

Close up of lucky charms cookies showing the texture.

Why you’ll love these Lucky Charms cookies

We really love St. Patrick’s Day around here. As an Irish-American (dual citizenship to be exact) it’s not hard to get caught up in the festivities, especially when you can use it as an excuse to plan a themed dinner menu or test new authentic Irish recipes.

We’ve done everything – from homemade Irish sausage to corned beef and cabbage tacos. Mostly, we try to go for authentic recipes, but this year, I wanted to do something to make the holiday a little more kid friendly, and these Lucky Charms cookies were a huge hit.

I kept the batch small this time, making only about 18 cookies, so you can’t definitely double it if you’re making these for a party. Either way, I know you’ll love them.

More St. Patrick’s Day recipes: Guinness braised beef / Irish shepherd’s pie / Irish potato candy / Irish beef stew

lucky charms cookies stacked on a marble surface with extra cereal marshmallows to the side

Ingredient notes:

  • Lucky Charms marshmallows – You can buy packs of just the marshmallows seasonally, but they can be hard to find — separating them by hand works just fine.
  • Dairy free butter – We normally use Earth Balance buttery sticks for baking, but any brand of dairy free butter should work. You can also use dairy butter if that is safe for you.
  • Cream of tartar – Gives these cookies their signature soft and chewy texture, but it also helps the cookies rise and spread, so don’t skip it.

Making changes to a recipe can result in recipe failure. Any substitutions listed below are simple changes that I believe will work in this recipe, but results are not guaranteed.

A woman with long, wavy hair and a polka dot shirt sits on a kitchen counter, smiling and laughing. Plates of muffins, cookies, and pistachio cake are beside her in a bright kitchen with white cabinets and modern style.

Melissa’s tips + tricks:

  1. Don’t over bake. The cookies might look under cooked when you take them out of the oven, but that’s exactly what you want. They’ll firm up as they cool and stay perfectly chewy.
  2. Decorate the tops! As soon as the cookies come out of the oven, press a few extra marshmallows into the tops to get the prettiest cookies possible. I like to strategically place my extra mallows to add a perfect variety of color on each cookie.
lucky charms cookies on a gray plate

Frequently asked questions

Can I make these cookies ahead of time?

Yes! You can bake the cookies up to 2 days ahead and store them in an airtight container at room temperature. You can also freeze the baked cookies for up to 3 months — just let them thaw at room temperature before serving.

More dairy free cookies: marshmallow stuffed s’mores cookies / black sesame cookies / chewy ginger molasses cookies / lime matcha cookies

Lucky Charms Cookies

Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 10 minutes
Total Time 30 minutes
Servings 20 cookies
These soft and chewy Lucky Charms cookies might not be authentically Irish, but they're deliciously adorable. With the iconic cereal marshmallows baked right in, these dairy free cookies are a festive, kid-friendly St. Patrick's Day treat that comes together in just 30 minutes!

Ingredients

  • 1 1/4 cups all-purpose flour - 150g
  • 1 teaspoon cream of tartar
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon coarse salt
  • 1/2 cup sugar - 100g
  • 1/2 cup dairy free butter - 113g, 1 stick
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 cup cereal marshmallows + extra for garnish

Instructions

  • Mise en place. Preheat oven to 350˚F and line a baking sheet with parchment paper. If needed, separate marshmallows from cereal and measure ingredients before you begin.
  • Whisk the dry ingredients. Mix the flour, baking soda, cream of tartar and salt in a medium bowl until everything is evenly distributed. Set it aside for later.
  • Mix the wet ingredients. With an electric mixer, beat the vegan butter (or shortening) with the sugar until it's light and fluffy. Then mix in your egg and vanilla extract. Be careful not to over mix or the cookies will be tough.
  • Combine the two. Add the flour mixture, a little bit at a time, to the wet ingredients, mixing until a dough forms. Then, gently stir in the marshmallows until they are evenly spread through the dough.
  • Bake the cookies. Scoop the cookies onto a prepared baking sheet and bake them for 10 – 12 minutes or until the edges and tops have set. When you take them out, they may look slightly undercooked, but that's what you want.
  • Decorate and cool. Remove the cookies from the oven and press a few extra marshmallows into their tops for extra decoration. Then, let them rest on the cookie sheet for a few minutes before transferring them to a cooling rack.

Video

Nutrition

Calories: 98kcal Carbohydrates: 13g Protein: 1g Fat: 5g Trans Fat: 1g Cholesterol: 9mg Sodium: 97mg Fiber: 0.2g Sugar: 6g