I love how simple and approachable this recipe is. I can mix everything together with basic pantry staples and a box of cereal, and the results always look and taste impressive. The texture is perfectly chewy in the center with lightly golden edges, and the pops of marshmallow on top make each cookie extra special.
I also appreciate that the dough can be made ahead and chilled, which gives me flexibility when planning desserts for gatherings. The bright cereal pieces and marshmallows make these cookies stand out on any dessert tray, and I always enjoy how both kids and adults reach for them first.
Ingredients
(Note: All ingredient amounts are listed in the recipe card below.)
¾ cup unsalted butter 1½ sticks, softened ¾ cup brown sugar packed ½ cup granulated sugar 1 large egg 1 ½ teaspoon vanilla extract 2 ¼ cups all-purpose flour ¾ cup Lucky Charms cereal finely crushed, just the cereal pieces, not marshmallows ¾ teaspoon baking soda ⅓ teaspoon salt 1 cup Lucky Charms marshmallows divided
Directions
I start by beating the softened butter, brown sugar, and granulated sugar together in a large bowl until the mixture is light and fluffy, which usually takes me about 1 to 2 minutes with a hand mixer. Then I add the egg and vanilla extract and mix until everything is smooth and well combined.
In a separate bowl, I whisk together the flour, crushed cereal pieces, baking soda, and salt. I slowly add these dry ingredients into the wet ingredients, mixing just until combined. I make sure not to overmix. Then I gently stir in ½ cup of the marshmallows using a silicone spatula.
I scoop the dough into 1½ to 2 tablespoon-sized balls and place them on a parchment-lined baking sheet. I chill the dough for at least 30 minutes, or overnight if I have the time. If I chill the dough overnight, I gently press each dough ball to about ¾-inch thick before baking so they spread evenly.
When I am ready to bake, I preheat the oven to 350°F. I bake the cookies for 8 to 10 minutes, until the edges are lightly golden and the centers look slightly underbaked. As soon as they come out of the oven, I press the remaining marshmallows into the tops of the warm cookies. I let them cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.
I sometimes mix in white chocolate chips for extra sweetness and creaminess. If I want even more crunch, I fold in a handful of extra crushed cereal pieces. For a festive twist, I like to use holiday-themed marshmallows when they are available.
When I want a thicker cookie, I chill the dough overnight, which helps control spreading. I have also experimented with browning the butter first for a slightly nutty, deeper flavor that pairs surprisingly well with the sweet marshmallows.
Storage/Reheating
I store these cookies in an airtight container at room temperature for up to 4 days. To keep them extra soft, I sometimes place a small piece of bread in the container to help retain moisture.
If I want to freeze the dough, I scoop it into balls and freeze them on a baking sheet before transferring to a freezer-safe bag. I bake them straight from the freezer and simply add 1 to 2 extra minutes to the baking time.
To refresh baked cookies, I warm them in the microwave for about 10 seconds to make the marshmallows soft and gooey again.
FAQs
Can I use the whole cereal instead of crushing it?
I prefer crushing just the cereal pieces because it blends more evenly into the dough. Leaving them whole can create uneven texture and spreading.
Do I have to chill the dough?
I find that chilling the dough really helps control spreading and improves the texture. While I can bake them without chilling, the cookies tend to spread more.
Can I freeze the cookie dough?
Yes, I often freeze the dough. I bake the dough balls straight from the freezer and add a couple of extra minutes to the baking time.
Why do the centers look underbaked?
I intentionally pull the cookies out when the centers look slightly underbaked. They continue to set as they cool, which keeps them soft and chewy.
Can I make these cookies smaller or larger?
I can adjust the scoop size, but I keep an eye on the baking time. Smaller cookies bake faster, while larger ones need a few extra minutes.
How do I prevent the marshmallows from melting too much?
I like to press some marshmallows on top right after baking rather than mixing them all into the dough. This keeps them looking fluffy and colorful.
Can I make this recipe without a mixer?
Yes, I can cream the butter and sugars by hand with a sturdy spoon or whisk, though it takes a bit more effort to get the mixture light and fluffy.
What happens if I overbake the cookies?
Overbaking can make them dry and crumbly. I always remove them once the edges start to turn lightly golden.
Can I brown the butter?
I sometimes brown the butter for a deeper flavor. I let it cool and solidify slightly before mixing it with the sugars.
How should I store leftover cookies?
I keep them in an airtight container at room temperature for several days. For longer storage, I freeze them and thaw at room temperature when ready to enjoy.
Conclusion
I love making these Lucky Charms Cookies whenever I want a dessert that feels cheerful and comforting. The buttery vanilla base, chewy centers, and colorful marshmallows make them unforgettable every time I bake them. They are simple, nostalgic, and always a crowd-pleaser in my kitchen.
