Overhead image of Rice Krispies Treats Cookies on a wooden serving tray surrounded by marshmallows

Rice Krispies Treats Cookies | Easy Marshmallow Cereal Cookies

Rice Krispies Treats Cookies combine soft, buttery cookie dough with crispy rice cereal, gooey mini marshmallows, and crunchy toffee pieces. They are chewy, crisp, easy to make, and perfect for parties, lunchboxes, or an after-dinner treat.
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Rice Krispies Treats Cookies take everything you love about the classic marshmallow cereal bar and turn it into a soft, chewy homemade cookie. Each bite is buttery and sweet, with crispy rice cereal for crunch and pockets of marshmallow flavor throughout.

Overhead image of Rice Krispies Treats Cookies on a wooden serving tray surrounded by marshmallows

If you cannot decide between a fresh batch of cookies and gooey Rice Krispies treats, this recipe gives you the best of both desserts. The dough comes together with simple pantry ingredients, and there is no complicated decorating or special equipment required. Just mix, scoop, bake, and try to let them cool before grabbing one from the pan.

These cereal cookies are a fun choice for bake sales, birthday parties, holiday cookie trays, lunchboxes, and casual weekend baking. If your family loves easy homemade desserts, this playful twist on two nostalgic favorites deserves a spot in your recipe box.

Why You’ll Love These Rice Krispies Cookies

  • Easy. The cookie dough uses familiar ingredients and straightforward steps.
  • Loaded with texture. Crispy rice cereal adds a light crunch to every soft and chewy cookie.
  • Gooey marshmallow pockets. Mini marshmallows melt into the dough and give the cookies the nostalgic flavor of homemade cereal treats.
  • Buttery toffee crunch. Toffee pieces add caramel flavor and another layer of irresistible texture.
  • No chill time required. You can mix and bake the dough right away.
  • Perfect for sharing. These colorful, nostalgic cookies are great for parties, potlucks, cookie exchanges, and homemade gifts.
  • Easy to customize. Add chocolate chips, sprinkles, peanut butter chips, or a little flaky salt to make them your own.

For another quick cookie with crisp edges and plenty of texture, try my thin and chewy chocolate chip cookies.

What Do Rice Krispies Treats Cookies Taste Like?

Rice Krispies Treats Cookies taste like a buttery sugar cookie crossed with a classic marshmallow cereal treat. Brown sugar and toffee pieces add rich caramel flavor, vanilla gives the dough that familiar bakery-style sweetness, and gooey mini marshmallows bring the unmistakable flavor of Rice Krispies treats.

The texture is what makes these cookies especially fun. The centers stay soft and chewy while the edges turn lightly golden. Crispy rice cereal keeps every bite light and crunchy without making the cookies feel heavy. The result is sweet, buttery, crisp, and chewy all at once.

Are These Cookies Made With Rice Krispies Treats?

These cookies do not require prepared cereal treats. Instead, the ingredients that give Rice Krispies treats their signature flavor and texture are mixed directly into the cookie dough.

Using crispy rice cereal, mini marshmallows, and toffee pieces keeps the process simple. You do not need to prepare a separate pan of cereal treats, wait for them to set, or chop them into pieces.

Ingredients To Grab

  • Unsalted Butter – Softened butter gives the cookies a rich flavor and helps create tender centers with lightly crisp edges. If you use salted butter, reduce the added salt.
  • Brown Sugar – Brown sugar adds moisture and a subtle caramel flavor that works beautifully with marshmallow.
  • Granulated Sugar – Granulated sugar encourages spreading and helps the cookie edges become delicately crisp.
  • Egg – One egg binds the dough and adds enough moisture to keep the cookies soft without making the dough too loose.
  • Vanilla Extract – Vanilla enhances the butter, brown sugar, and marshmallow flavors.
  • All-Purpose Flour – Flour gives the dough structure. Measure it carefully so the cookies do not become dry or cakey.
  • Baking Soda – Baking soda helps the cookies spread and brown around the edges.
  • Salt – A little salt balances the sweetness and makes the vanilla and marshmallow flavors stand out.
  • Crispy Rice Cereal – Rice Krispies or another crisp rice cereal adds the signature light crunch. Use fresh cereal for the best texture.
  • Mini Marshmallows – Mini marshmallows melt into sweet, gooey pockets. Freezing them briefly and enclosing them in the dough helps prevent excessive leaking.
  • Toffee Pieces – Toffee adds buttery caramel flavor and a crisp texture that complements the cereal. Use packaged toffee bits or chopped chocolate-free toffee pieces.

How Do You Keep Mini Marshmallows From Melting Out Of Cookies?

Mini marshmallows are meant to become soft and gooey in these cookies, but any pieces exposed around the edges can melt onto the baking sheet. Freeze the marshmallows for about 30 minutes before mixing the dough. This slows down the melting process and makes them easier to handle.

When portioning the cookies, tuck any visible marshmallows into the center of each ball and cover them completely with dough. A little marshmallow may still escape and caramelize around the edges, but parchment paper will prevent it from sticking permanently to the pan.

How To Make Rice Krispies Treats Cookies

Metal baking sheet lined with unbleached parchment paper

Prepare the oven and pans. Preheat the oven to 350°F. Line a large baking sheet with parchment paper or a silicone baking mat.

Dry ingredients mixed together in a blue bowl with a whisk

Combine the dry ingredients. Add the all-purpose flour, baking soda, and salt to a medium bowl. Whisk until evenly combined.

Wet ingredients combined for Rice Krispie Treats Cookies in a blue bowl with a silicone spatula

Cream the butter and sugars. Place the softened butter, brown sugar, and granulated sugar in a large mixing bowl. Beat with an electric mixer for 2 to 3 minutes, or until the mixture looks lighter and fluffy.

Creamed butter and sugar mixed with wet ingredients for cookie dough batter

Add the wet ingredients. Beat in the eggs one at a time, mixing well after each addition. Mix in the vanilla extract.

Finish the dough. Gradually add the flour mixture to the butter mixture. Mix on low speed just until no dry streaks remain. Do not overmix. Gently fold in the crispy rice cereal and toffee pieces. Add the mini marshmallows last and fold just until evenly distributed so you do not crush the cereal or warm the marshmallows.

Completed cookie dough for Rice Krispies Treats Cookies in a metal bowl with silicone spatula

Portion the cookies. Scoop the dough into 2-tablespoon portions. Place the portions about 2 inches apart on the prepared baking sheets and press a few extra cereal or toffee pieces onto the tops.

Cookie dough portioned and placed on a parchment lined baking sheet

Bake. Bake for 9 to 11 minutes, or until the edges are lightly golden and the centers still look a little soft.

Baked Rice Krispies Treats Cookies on a parchment lined cookie sheet

Cool. Let the cookies rest on the baking sheet for 5 minutes. Transfer them to a wire rack and allow them to cool completely.

Tips And Tricks

When I first started in the kitchen, cookies were one of my pain points. I thought you could just toss everything in a bowl, bake it, and the cookies would turn out just like the pictures. Wrong. After years of testing different techniques and teaching myself the ins and outs of cookie perfection, here are some of the things to consider with this recipe before getting started:

  • Measure the flour correctly. Spoon the flour into the measuring cup and level it with a knife. Scooping directly from the can pack in too much flour and leave you with dry cookies.
  • Use softened, not melted, butter. Properly softened butter should hold its shape but indent easily when pressed. Melted butter can cause the cookies to spread too much.
  • Check the cereal before baking. Stale cereal will not regain its crunch in the oven. Start with a freshly opened or tightly sealed package.
  • Fold gently. Stirring too aggressively can crush the rice cereal and remove the texture that makes these cookies special.
  • Do not overbake. Remove the cookies when the edges are set but the centers still look slightly underdone. They will continue to cook on the hot pan.
  • Start with a cool baking sheet. Placing cookie dough on a warm pan can cause the butter to melt before the cookies reach the oven, leading to extra spreading.
  • Use a cookie scoop. Even portions bake at the same rate and give your cookies a uniform appearance.

If you love soft, old-fashioned cookies, my chewy oatmeal raisin cookies are another comforting recipe to keep on hand.

Variations

This Rice Krispies cookie recipe is easy to customize with your favorite mix-ins. Here are some ways to switch it up to make one of my favorite cookie recipes one of your new favorites:

  • Chocolate Rice Krispies Cookies. Replace half of the toffee pieces with semisweet or milk chocolate chips.
  • Birthday Cake Cookies. Fold in 1/3 cup of rainbow jimmies for a colorful party dessert.
  • S’mores Cookies– Replace the toffee pieces with mini chocolate chips and small pieces of graham cracker.
  • Sweet And Salty Cookies– Sprinkle the cookies with flaky sea salt immediately after baking.
  • Chocolate Cereal Cookies– Use cocoa-flavored crispy rice cereal for extra chocolate flavor.

For a rich chocolate option that begins with a shortcut, add these easy brownie mix cookies to the same dessert tray.

What To Serve With Them

These marshmallow cereal cookies are delicious on their own, especially while they are still slightly warm. You can also serve them with:

  • A cold glass of milk
  • Hot chocolate
  • Coffee or espresso
  • Vanilla ice cream
  • A drizzle of melted chocolate

They also pair nicely with strawberry crinkle cookies and chocolate chip cookie bars when you need an easy assorted dessert platter or holiday cookie box.

How Long Do Rice Krispies Cookies Last?

Store completely cooled Rice Krispies Treats Cookies in an airtight container at room temperature for up to four days. Place parchment paper between layers to keep the cookies from sticking together.

The cereal will gradually soften as it absorbs moisture from the cookies, so these have the best crunch during the first two days. Do not refrigerate them unless necessary because the cool, humid environment can make the cereal lose its crisp texture more quickly.

Can You Make The Dough Ahead Of Time?

Yes. Prepare the cookie dough as directed, cover it tightly, and refrigerate it for up to 24 hours. For the best texture, wait to fold in the crispy rice cereal until shortly before you portion and bake the cookies.

If the cereal is already mixed into the dough, the cookies will still bake properly, but the cereal may be slightly softer. Allow very cold dough to sit at room temperature for 10 to 15 minutes if it is too firm to scoop.

Can You Freeze Them?

Both baked Rice Krispies cookies and unbaked cookie dough can be frozen.

To freeze baked cookies, let them cool completely and place them in a freezer-safe container with parchment paper between the layers. Freeze for up to two months. Thaw at room temperature before serving. The cereal may lose a little of its original crunch after freezing.

To freeze the cookie dough, portion it into balls and place them on a parchment-lined baking sheet. Freeze until firm, then transfer the dough balls to a freezer-safe bag. Freeze for up to two months. Bake from frozen at 350°F, adding 1 to 2 minutes to the baking time.

If you need an easy dessert that does not require the oven, try these chocolate and oats no-bake cookies.

Frequently Asked Questions

Why Did My Rice Krispies Cookies Spread Too Much?

The butter may have been too warm, the flour may have been undermeasured, or the dough may have been placed on a warm baking sheet. Chill the dough for 20 to 30 minutes if it feels very soft, and always use a completely cool pan.

Why Are My Cookies Dry?

Dry cookies are usually caused by too much flour or too much time in the oven. Measure flour using the spoon-and-level method and remove the cookies when their centers still look soft.

Will The Rice Krispies Stay Crispy?

The cereal will remain crispest on the day the cookies are baked. It softens slightly over time as it absorbs moisture from the dough, but it will still add texture. Fresh cereal and an airtight storage container give you the best results.

Do I Need To Chill The Cookie Dough?

No. The dough can be baked immediately when the butter is properly softened. If your kitchen is warm or the dough feels sticky and loose, refrigerate it for 20 minutes before scooping.

Can I Use Generic Crispy Rice Cereal?

Yes. Any plain, crisp rice cereal with a similar light texture will work. Make sure it is fresh and avoid heavily sweetened cereal unless you want a noticeably sweeter cookie.

More Of My Best Cookie Recipes

If you love these easy Rice Krispies Treats Cookies, try one of these simple favorites next:

Rice krispies treat cookies pin with text overly

If you love this Rice Krispies Treats Cookies recipe as much as we do, share it with your friends and family so they can try it too. Save it for the next time you need an easy cookie with plenty of nostalgic marshmallow flavor and irresistible crunch.

Overhead image of Rice Krispies Treats Cookies on a wooden serving tray surrounded by marshmallows

Rice Krispies Treats Cookies | Easy Marshmallow Cereal Cookies

Soft and chewy Rice Krispies Treats Cookies are packed with crispy rice cereal, gooey mini marshmallows, vanilla, and buttery toffee pieces for an easy, nostalgic dessert.
Prep Time 15 minutes
Cook Time 10 minutes
Total Time 25 minutes
Servings: 24 cookies
Course: Dessert
Cuisine: American
Calories: 182

Ingredients
  

  • 1 cup Butter softened
  • 3/4 cup Brown Sugar packed
  • 1/2 cup Granulated Sugar
  • 1 Egg
  • 2 tsp Vanilla Extract
  • 2 1/4 cups All Purpose Flour
  • 1 tsp Baking Soda
  • 1/2 tsp Salt
  • 2 cups Rice Krispies Cereal
  • 1 cup Mini Marshmallows
  • 3/4 cup Toffee Pieces

Method
 

  1. Preheat the oven to 350°F. Line two large baking sheets with parchment paper or silicone baking mats.
  2. Whisk together the flour, baking soda, and salt in a medium bowl.
  3. In a large mixing bowl, beat the softened butter, brown sugar, and granulated sugar for 2 to 3 minutes, or until light and fluffy.
  4. Beat in the egg and vanilla extract until combined.
  5. Gradually add the dry ingredients to the butter mixture. Mix on low speed just until no streaks of flour remain.
  6. Gently fold in the Rice Krispies and toffee pieces. Fold in the mini marshmallows last.
  7. Scoop the dough into 2-tablespoon portions. Place the portions about 2 inches apart on the prepared baking sheets.
  8. Bake for 9 to 11 minutes, or until the edges are lightly golden and the centers still look soft.
  9. Cool the cookies on the baking sheet for 5 minutes before transferring them to a wire rack.

Notes

  • Freeze the mini marshmallows for 30 minutes and keep them enclosed in the dough to reduce melting and sticking.
  • Measure the flour by spooning it into the measuring cup and leveling the top.
  • Fold in the cereal gently to keep it from becoming crushed.
  • Do not overbake. The cookies will continue to set as they cool on the pan.
  • Store cooled cookies in an airtight container at room temperature for up to four days.
  • Freeze baked cookies or portioned cookie dough for up to two months.

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Ashley Thompson, food blogger and recipe developer for ComfortCooks.com in a blue tank top smiling

Hi! I'm Ashley.

Welcome to my corner of the internet!


I'm married to my high school sweetheart and we have three amazing sons.

I love carbs, cheese, and all things spicy and deep fried. There's nothing that makes me happier than a full kitchen table and a family with a full belly!


Learn More About Me

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