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    Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)

    Home » Recipes » Dessert » Cookies » Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)

    Published: Oct 19, 2022 · Modified: Oct 14, 2023 by Sarah · This post may contain affiliate links · 6 Comments

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    Cornflake Chocolate Chip Marshmallow Cookies are to die for! A Milk Bar recipe inspires this cookie. They are truly some of the best cookies you will ever make.  

    Oh hello! I've been making Cornflake Chocolate Chip Marshmallow cookies for years. This recipes was adapted from a Milk Bar recipe they had published on their website. It took a few tries and some changes to get them to work right for me.  I have been asked to bring them to parties over and over. They are SWEET, they are SALTY, they are SOFT, they have a little CRUNCH, and the GOOEY marshmallow... altogether it is divine!  You must try them. If you like the sweet and salty taste of cornflakes and marshmallow together, you should also try these amazing Cornflake Wreaths or our Gooey Chex Mix! Check out our desserts page for all of our sweet treats.

    *This post contains affiliate links.

    Cornflake Chocolate Chip Marshmallow Cookie (Copycat Milk Bar Recipe)

    three cornflake chocolate chip marshmallow cookies on a marble surface.

    Ingredients

    • butter
    • sugar
    • brown sugar
    • egg
    • vanilla extract
    • flour
    • baking powder
    • baking soda
    • salt
    • mini marshmallows
    • mini chocolate chips

    Cornflake Crunch Ingredients

    • cornflakes cereal
    • sugar
    • salt
    • butter

    Milk Bar Recipe for Cornflake Crunch

    Make the cornflake crunch first.

    Preheat the oven to 275 degrees. Line a baking sheet with parchment paper or a silicone baking mat; set aside.

    collage of four photos - Cornflakes cereal in a bowl in the top left photo, the following 3 photos are of cornflakes being crushed, mixed with sugar and tossed with butter.

    1. Pour the cornflakes into a medium bowl.
    2. Crush the cornflakes to one-quarter of their original size.
    3. Add sugar and salt, toss to combine.
    4. Add butter and toss again until the cornflakes are in small clusters.

    Spread the cornflake mixture in an even layer on a parchment-covered baking sheet. Bake until the clusters are toasted, about 20 minutes. Remove and let cool completely.

    Milk Bar Copycat Cookie Recipe Instructions 

    Collage with 4 steps of cookie dough being mixed in a kitchenaid mixer

    1. Combine the butter and sugars in a stand mixer with a paddle attachment.
    2. Cream together on medium-high for 2 to 3 minutes.
    3. Scrape the sides of the bowl, add the egg and vanilla, and beat for 7 to 8 minutes.
    4. Reduce the mixer speed to low and add the flour, baking powder, baking soda, and salt. Mix just until the dough comes together - no longer than a minute.
    5. and 6. On low speed, paddle in the cornflake crunch and chocolate chips until they’re incorporated.

    Cookie dough with crushed cornflakes in mixer and cookie dough with cornflakes and chocolate chips in a mixing bowl

    Baking Instructions: 

    1. Divide dough into ¼ c. balls, stuff with 2 or 3 mini marshmallows, and place balls on a parchment-lined cookie sheet. Refrigerate for at least an hour, or place in the freezer for 30-45 minutes. (Dough must be chilled!)
    2. Heat the oven to 365°f
    3. Re-arrange the dough balls a minimum of 4 inches apart on a parchment- or Silpat-lined cookie sheet and bake for 11-16 minutes (check the cookies at 11 minutes, mine took 12!) The cookies will puff, crackle, and spread.
    4. Cool the cookies completely on cookie sheets before transferring them to a plate. Store in an airtight container, if you have any left to store.

    cookie dough with marshmallows and chocolate chips on a cookie sheet

    They are not hard to make, but they do take some time. It's worth it!

    cornflake chocolate chip marshmallow cookie

    Pro Tips for Cornflake Chocolate Chip Cookies:

    • Freeze the balls of dough and keep them in a gallon-sized freezer bag. When you are ready to bake them, put them in the oven still frozen. This will give you a thick, soft cookie.
    • Results will be better if your butter and eggs are at room temperature when you mix them in.

    a cornflake chocolate chip marshmallow cookie with a bite taken out of it resting against two other cookies.

    If you make these cookies, please leave us a comment and a positive review. We appreciate them! 

    cornflake chocolate chip marshmallow cookie close-up.

    Cornflake Chocolate Chip Marshmallow Cookies

    Cornflake Chocolate Chip Cookies with melted marshmallows are to die for! This is a copycat Milk bar recipe that is always a crowd-pleaser.
    5 from 3 votes
    Print Pin Rate
    Prep Time: 15 minutes minutes
    Cook Time: 12 minutes minutes
    Chill Time: 45 minutes minutes
    Total Time: 1 hour hour 12 minutes minutes
    Servings: 24
    Calories: 281kcal
    Author: Pretty Providence
    Cost: $20

    Equipment

    • Stand mixer paddle attachment
    • Parchment Paper

    Ingredients

    Cornflake Crunch

    • 5 cups cornflakes
    • 3 tablespoon sugar
    • 1 teaspoon kosher salt
    • 9 tablespoon melted butter

    Cornflake Chocolate Chip Cookies

    • 1 cup butter room temperature
    • 1 ¼ cup sugar
    • ⅔ cup packed brown sugar
    • 1 egg
    • ½ teaspoon vanilla extract
    • 2 cups flour
    • ½ teaspoon baking powder
    • ¼ teaspoon baking soda
    • 1 ½ teaspoon salt
    • 1 cup mini marshmallows
    • 1 cup mini chocolate chips

    Instructions

    Milk Bar Recipe for Cornflake Crunch

    • Preheat the oven to 265 degrees. Line a baking sheet with parchment paper or a silicone baking mat; set aside.
    • Pour the cornflakes into a medium bowl. Crush the cornflakes to one-quarter of their original size. Add sugar and salt toss to combine. Add butter and toss again until the cornflakes are in small clusters.
    • Spread the cornflake mixture in an even layer on a parchment covered baking sheet. Bake until the clusters are toasted, about 20 minutes. Remove and let cool completely.

    Cornflake Chocolate Chip Marshmallow Cookies

    • Combine the butter and sugars in a stand mixer with a paddle attachment, cream together on medium-high for 2 to 3 minutes. Scrape the sides of the bowl, add the egg and vanilla, and beat for 7 to 8 minutes.
    • Reduce the mixer speed to low and add the flour, baking powder, baking soda, and salt. Mix just until the dough comes together - no longer than a minute.
    • On low speed, paddle in the cornflake crunch and chocolate chips until they’re incorporated.
    • Divide dough into ¼ c. balls, stuff with 2 or 3 mini marshmallows, and place balls on a parchment-lined cookie sheet. Refrigerate for at least an hour, or place in freezer for 30-45 minutes. (Dough must be chilled!)
    • Heat the oven to 365°f
    • Re-arrange the dough balls minimum 4 inches apart on parchment- or silpat-lined cookie sheet and bake for 11-16 minutes (check the cookies at 11 minutes, mine took 12!) The cookies will puff, crackle, and spread.
    • Cool the cookies completely on cookie sheets before transferring to a plate. Store in airtight container.

    Notes

    Pro Tips: 
    Dough must be chilled. Freeze balls of dough and then put them in the oven still frozen.
    Bring butter and eggs to room temperature before you mix them in.
    Store in an airtight container. 

    Nutrition

    Calories: 281kcal | Carbohydrates: 38g | Protein: 2g | Fat: 14g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.5g | Cholesterol: 40mg | Sodium: 402mg | Potassium: 44mg | Fiber: 1g | Sugar: 24g | Vitamin A: 498IU | Vitamin C: 1mg | Calcium: 24mg | Iron: 2mg
    Did you make this recipe?Mention @prettyprovidenceblog or tag #prettyprovidence!

    Sarah

    Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)Cornflake Chocolate Chip Marshmallow Cookies (Copycat Milk Bar Recipe)
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    Reader Interactions

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      Recipe Rating




    1. Demi

      February 14, 2023 at 2:53 pm

      Is the flour used AP or Bread?

      Reply
      • Jessica

        February 16, 2023 at 1:55 pm

        All purpose.

        Reply
    2. Melissa

      October 19, 2022 at 1:50 pm

      5 stars
      Oh my - loved everything about these cookie! The marshmallow center was TDF!

      Reply
    3. Andie

      October 19, 2022 at 1:27 pm

      5 stars
      I would have never thought to add cornflakes to my chocolate chip cookies, but they were the perfect crispy add! So tasty!

      Reply
      • Jessica

        October 20, 2022 at 11:31 am

        Yay! So glad you loved them.

        Reply
    4. Jessica

      October 19, 2022 at 1:02 pm

      5 stars
      Mmmm!! These turned out absolutely delicious, and now a new favorite at home with my boys. Thank you!

      Reply

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