Your favorite part of the cereal—the marshmallows—are tucked into these delightful cookies for a burst of rainbow fun. These Lucky Charm Cookies are easy to make and loaded with colorful marshmallows and white chocolate chips. They’re truly “magically delicious.”
At our house, our toddler refuses traditional chocolate chip cookies—dark and milk chocolate are off the table—yet he will happily eat white chocolate and begs for marshmallows every day. That made these Lucky Charm Cookies, filled with marshmallows and white chocolate chips, an instant hit.
While I still love a classic small-batch chocolate chip cookie, folding in the brightest bits of childhood cereal is too much fun to pass up. These cookies are playful, colorful, and perfect for sharing.
Why You Will Love These Lucky Charm Cookies
- Kid-friendly and fun. Little hands enjoy picking marshmallows and pressing them into dough, and the colorful treats make baking a playful family activity.
- Great for St. Patrick’s Day or any celebration. The rainbows make these a festive dessert for holiday parties or school events.
- Quick and simple. The dough comes together in about 10 minutes; then scoop and bake. No complicated steps or fancy equipment needed.
- Deliciously chewy. These cookies are soft, slightly chewy, and full of white chocolate and marshmallow pockets—one bite and you’ll be hooked.
Ingredient Notes
See the recipe card below for exact measurements.
- Butter: Use unsalted butter, softened but not overly warm. If it leaves a deep indentation or looks glossy, it’s too soft and the cookies may spread.
- Egg: One large egg at room temperature gives better texture and helps with mixing.
- Flour: All-purpose flour works best. A 1:1 gluten-free all-purpose flour can be substituted, although texture will vary slightly.
- Baking soda: Make sure it’s fresh to help the cookies rise and keep them from spreading too much.
- White chocolate chips: Choose a good-quality white chocolate chip. Some brands are less sweet and balance the cookie better.
- Cereal marshmallows: You can pick marshmallows from a box of Lucky Charms or buy bags of dehydrated cereal marshmallows. Adding a few extra marshmallows on top of the scooped dough keeps the cookies colorful and picture-perfect.
Step-By-Step Instructions:
Step 1: Cream the butter and sugars until light and fluffy using a hand or stand mixer. This usually takes several minutes. Proper creaming adds lift and structure to the cookies. Remember: the butter should be softened but not greasy.
Step 2: Add the egg and vanilla, mixing until combined.
Step 3: Whisk together flour, baking soda, and salt in a separate bowl. Add the dry mix to the wet ingredients in thirds, mixing only until no major streaks of flour remain. Avoid overmixing to keep cookies tender.
Step 4: Gently fold in marshmallows and white chocolate chips. Stir carefully—vigorous mixing can break down the marshmallows and make the dough messy.
Step 5: Optionally chill the dough for 15–30 minutes. Chilling can help control spreading, but don’t chill for more than an hour or the marshmallows may start to break down.
Step 6: Scoop or roll dough into balls (a 1.5 tablespoon scoop works well). Bake at 350°F (175°C) for about 8–10 minutes. Remove when the edges are barely golden for soft, chewy cookies—bake longer if you prefer them crisper. Let cookies rest on the sheet for 2–3 minutes, then transfer to a cooling rack.
Recipe Tips
- Measure flour correctly: Spoon flour into your measuring cup and level it, or weigh it for best results. Scooping directly can pack too much flour into the cup.
- Don’t over-soften the butter: It should yield a slight indentation when pressed, but not collapse or look glossy.
- Limit chilling time: Chill dough for no more than an hour; longer chilling can cause marshmallows to break down.
Storage
Store cookies in an airtight container if you prefer softer marshmallows. If you like marshmallows that retain some chew and slight crunch, cover loosely instead of sealing completely. Cookies keep well for 3–4 days at room temperature. Freezing or refrigerating the dough is not recommended because marshmallows can deteriorate and become messy.
For a Less Sweet Lucky Charms Cookie
If you prefer a less-sweet cookie, try one of these adjustments:
- Omit most marshmallows from the dough and press a few on top of each cookie before baking.
- Use half the amount of white chocolate chips.
- Use fewer marshmallows and add some of the cereal pieces for texture with less sweetness.
These tweaks will tone down the sweetness while keeping the playful look and flavor.
Other Recipes You Will Love:
- Egg Free Chocolate Chip Cookies
- Key Lime Cookies
- Lemon Sugar Cookies
- Birthday Cake Cookies
- Funfetti Rice Krispie Treat Pops
- Cookies and Cream Cookies
- Golden Oreo Truffles
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Lucky Charm Cookies
Ingredients
- ½ c butter, softened to room temperature (1 stick)
- ¼ c sugar
- ¾ c light brown sugar
- 1 egg
- 1 tsp vanilla extract
- 1 ½ c flour (210 grams), spooned and leveled
- ¾ tsp baking soda
- ½ tsp sea salt
- 1 c white chocolate chips
- 1 c cereal marshmallows, plus more for tops
Instructions
- Cream the butter and sugars until light and fluffy (about 3–5 minutes). Add the egg and vanilla and mix to combine.
- In a separate bowl, whisk flour, baking soda, and salt. Add the dry mix to the wet ingredients in thirds, mixing until just incorporated.
- Gently fold in marshmallows and white chocolate chips. Chill the dough 15–30 minutes if desired, but avoid chilling longer than an hour.
- Scoop (about 1.5 tablespoons) or roll into balls, place on parchment-lined baking sheets, and bake at 350°F for 8–10 minutes. Remove when edges are barely golden for a soft cookie. Let cool on the sheet 2–3 minutes, then transfer to a rack.
Notes
If doubling the recipe: Use 420 grams of flour; tripling requires 630 grams.
For prettier cookies: Reserve some marshmallows to press onto the tops of scooped cookies so the colors remain bright without dough specks.
Storage reminder: An airtight container will soften marshmallows over time; for more texture, cover loosely instead of sealing completely.
Nutrition
, Carbohydrates: 18 g
, Protein: 1 g
, Fat: 6 g
Nutrition information is an estimate and should be used as a guideline.