Brown Butter Rice Cereal Marshmallow Cookies

Brown Butter Rice Cereal Marshmallow Cookies

These brown butter rice cereal marshmallow cookies are chewy, crunchy, and a little bit nostalgic. Browned butter gives each cookie a deep, nutty aroma that plays beautifully with the crisp texture of rice cereal and pockets of soft mini marshmallows. The edges bake up lightly golden while the centers stay tender and slightly gooey from the marshmallows. They are a perfect treat for afternoon coffee, an after-school snack, or a playful addition to a holiday cookie platter. If you love the caramelized complexity of browned butter in baked goods, this cookie will feel familiar and exciting at the same time. For a different brown-butter take, try my take on brown butter bourbon pecan chocolate chunk cookies to see how browned butter pairs with nuts and chocolate.

Ingredients

• 1 cup unsalted butter, cut into 16 pieces, 
for browning and richness. Browning concentrates the butter flavor and adds nuttiness.
• 2 and 1/4 cups all-purpose flour, 
provides structure and chew.
• 2 teaspoons cornstarch, 
lightens the texture for a tender bite.
• 1 teaspoon baking soda, 
gives a gentle lift and spread.
• 1/2 teaspoon salt, 
balances sweetness; use fine salt.
• 2 cups crispy rice cereal, 
adds crisp crunch and lightness.
• 1 cup mini marshmallows, 
melts slightly inside the cookie for soft pockets.
• 3/4 cup packed light or dark brown sugar, 
adds moisture, chew, and molasses flavor.
• 1/2 cup granulated sugar, 
contributes to crisp edges and sweetness.
• 1 large egg, at room temperature, 
binds and helps leaven.
• 1 large egg yolk, at room temperature, 
adds richness and chew.
• 2 teaspoons pure vanilla extract, 
deepens flavor and aroma.
• Optional: flaky sea salt, for topping, 
a light sprinkle enhances contrast and flavor.

Step-by-step Instructions

1. Brown the butter: In a light-colored skillet, melt the butter over medium heat, stirring constantly. Watch closely as the milk solids turn golden brown and the butter smells nutty. Immediately pour browned butter into a bowl and let it cool slightly before using. Tip: Use a light pan so you can see the color change easily.
2. Whisk dry ingredients: In a large bowl, whisk together the flour, cornstarch, baking soda, and salt until evenly combined.
3. Fold in cereal and marshmallows: Add the crispy rice cereal and mini marshmallows to the dry mixture and fold gently so they are distributed without crushing the cereal too much.
4. Combine wet ingredients: In another bowl, whisk the cooled brown butter with the brown sugar, granulated sugar, egg, egg yolk, and vanilla until smooth and homogenous.
5. Make the dough: Add the wet ingredients to the dry ingredients and mix until a sticky dough forms. The dough will be tacky and should hold together well.
6. Form the cookies: Scoop about 2 tablespoons of dough for each cookie and roll into balls. Place the dough balls on a tray and freeze them for 1 hour. Freezing firms the dough and helps control spread while baking. For a quicker set, place tray in the coldest part of the freezer.
7. Preheat oven: Preheat the oven to 350°F (177°C) and line baking sheets with parchment paper.
8. Bake: Arrange the frozen dough balls on the prepared baking sheets, leaving space to spread. Bake for 14 to 15 minutes until the edges are lightly browned and the centers are set.
9. Finish and cool: If using, sprinkle flaky sea salt on the hot cookies. Let cookies cool on the baking sheet for 10 minutes before transferring to a wire rack to cool completely. Tip: Cooling on the sheet lets the cookies finish setting without breaking.

Recipe Details

• Prep Time: 1 hour 20 minutes (includes 1 hour freezing)
• Cook Time: 15 minutes
• Total Time: 1 hour 35 minutes
• Servings: Makes about 30 cookies
• Calories: Approximately 140 kcal per cookie

For additional brown butter cookie inspiration, see this take on browned butter pecan chocolate chip cookies.

Tips, Storage & Variations

• Small tips: Use a light skillet for browning so you can watch the color change. Let the brown butter cool slightly so it does not cook the eggs when mixed.
• Dough chilling: Freezing the formed dough balls for 1 hour makes them easier to handle and helps prevent excessive spread in the oven.
• Storage: Store cooled cookies in an airtight container at room temperature for up to 4 days. Layer with parchment to prevent sticking.
• Freezing: Freeze baked cookies in a sealed container for up to 2 months. You can also freeze the dough balls on a tray, then transfer to a freezer bag for up to 3 months; bake from frozen, adding 1 to 2 minutes to baking time.
• Variations using existing ingredients only: Use dark brown sugar for a deeper molasses flavor, or swap to light brown sugar for a milder taste. For a slightly crunchier bite, add an extra 1/4 cup of crispy rice cereal when folding in. For a less sweet cookie, reduce the granulated sugar by 2 tablespoons and taste the dough before chilling.
• For simple cookie shaping and portioning tips, check this helpful guide to 3-ingredient peanut butter cookies for scoop sizes and baking notes.

FAQ

1. Can I use salted butter instead of unsalted?
   Yes. If you use salted butter, reduce or omit the added 1/2 teaspoon salt to avoid over-salting.
2. Do the marshmallows melt completely?
   The mini marshmallows soften and create chewy pockets, but they will not disappear entirely.
3. Can I skip freezing the dough?
   Freezing is recommended to control spread. If you skip freezing, cookies may flatten and bake faster.
4. How do I know when the cookies are done?
   They are done when the edges are lightly browned and the centers look set. They will finish firming as they cool on the sheet.
5. Can I make the dough ahead of time?
   Yes. Form and freeze the dough balls up to 3 months. Bake from frozen, adding a minute or two to the bake time.

People Also Ask

1. What does browning butter do for cookies?
   Browning butter adds a nutty, caramelized flavor and deeper aroma that enhances cookie richness.
2. Will crispy rice cereal stay crunchy in the cookie?
   Yes. The cereal keeps some crunch, providing contrast to the soft marshmallow pockets.
3. Can I use full-size marshmallows?
   Full-size marshmallows will create larger pockets and may change texture; mini marshmallows are recommended for even distribution.
4. Why is cornstarch used in cookie recipes?
   Cornstarch helps create a tender, soft crumb by inhibiting gluten formation in the dough.
5. Can I refrigerate instead of freezing the dough?
   Yes. Refrigerate for at least 30 minutes to firm up the dough, but freezing gives a more predictable shape and texture.
6. Will these cookies become hard when stored?
   Stored properly in an airtight container at room temperature, they should remain tender for several days.
7. How should I reheat cookies with marshmallows?
   Warm briefly in a 300°F oven for 3 to 5 minutes to soften marshmallows without melting them completely.
8. Is there a substitute for cornstarch in this recipe?
   This recipe calls for cornstarch for texture. Substitutes can alter texture and are not recommended here.

Conclusion

If you love the combination of nutty browned butter, crisp cereal, and gooey marshmallows, these cookies are a joyful, playful bake to add to your rotation. For a similar marshmallow-packed treat inspired by a famous store-bought cookie, try this Marshmallow Crispy Cookies (Costco Copycat) at The Salted Sweets for comparison. If you want another brown butter rice cereal recipe with extra goo and chew, check out this Brown Butter Rice Crispy Treats (Extra Gooey & Chewy!). I hope you bake a batch soon and share how they turn out with friends and family. Enjoy the cozy aromas and the little pockets of marshmallow warmth.