These Chocolate Chunk Marshmallow Cookies are ooey, gooey, and delicious. Add some extra texture and flavor to the traditional chocolate chip cookie by using chunks and marshmallows!
Ooey Gooey Goodness
I really enjoy making homemade cookies and I especially enjoyed making these. It was a lot of fun sprucing up the Plain Jane chocolate chip cookie! Adding marshmallows made the cookies really gooey and the kids loved them!
Watching the marshmallows bubble and ooze in the oven had my mouth watering long before they were ready to come out of the oven.

Get Ready to Bake
I like mega big cookies. Ridiculously big cookies. Cookies that so big that it takes two hands to hold them. If that's not your kind of cookie, you can easily drop by rounded tablespoons instead of by a medium-sized cookie scoop.
Of course, you'll have to adjust the baking time accordingly... either way you make them, they'll be delicious!
Softened butter is best for use for this recipe. Slightly softened butter will help prevent the cookies from spreading. As in any baking, when using melted butter it will cause doughs and batter to be runnier and therefore causing spread in baked goods.
Simply allow the butter to sit out on the counter for about 20 to 30 minutes before using it. Avoid using the microwave for the chance of overheating the butter.
When preparing the cookie dough and before placing the dough on the cookie sheets, tuck any marshmallow bits into the dough so that they are not peeking out of the bottom. Marshmallows will melt and stick to the cookie sheets if they are exposed.
Silicone baking mats or parchment paper are wonderful to use when preparing these cookies in case marshmallows sneak out during the baking process.

Cookies Out of the Oven
Let these cookies cool after coming out of the oven before transferring to a wire rack. This recipe makes a really soft and chewy cookie and moving them too quickly will cause them to fall apart.
It'll be tempting to dive into these cookies but they will continue to bake while they cool. Remember, good things come to those who wait... and these cookies are worth it!
These chocolate chunk marshmallow cookies are my kids' favorite and even they have patience before digging into those cookies!

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Chocolate Chunk Marshmallow Cookies
It hasn't even been a day since I've made these chocolate chip cookies and my kids have asked when I'll make them again. I call this cookie a huge success! They use simple ingredients and really quick to make.
Ingredients in Chocolate Chunk Marshmallow Cookies
- Unsalted Butter - softened butter is best for this recipe. It's important to not use melted butter as it will cause the cookies to spread. Slightly softened butter is best!
- Brown Sugar - brown sugar helps make the cookies chewy
- Granulated Sugar
- Egg
- Vanilla Extract
- All-Purpose Flour
- Baking Soda
- Baking Powder
- Salt
- Chocolate Chunks - can be substituted for chocolate chips
- Mini Marshmallows - it's best to tuck the marshmallows into the dough before placing them on the cookie sheet. This will help prevent any marshmallows from melting and sticking to the pan.
What's Needed to Make These Cookies
- Cookie Sheets
- Measuring Cups and Spoons
- Silicone Mats - helps prevent cookies from sticking to the sheets and makes for easy cleanup.
- Mixing Bowls
- Medium-sized cookie scoop

How to Make these Chocolate Chunk Marshmallow Cookies
Preheat the oven- Preheat to 350° and spray a cookie sheet with non-stick spray.
Combine the wet ingredients- Beat together softened butter, brown sugar, and granulated sugar until smooth. Add in egg and vanilla extract and mix until combined.
Mix in the dry ingredients- Slowly add in flour, baking soda, baking powder, and salt. Gently blend ingredients together without over mixing.
Stir in the chocolate chunks and marshmallows- Using a spoon, gently stir in chocolate chunks and mini marshmallows.
Scoop the cookies onto the cookie sheet- Using a cookie scoop, drop them onto greased cookie sheet.
Bake for about 11 minutes or until the tops and edges of cookies are golden.
Let the cookies cool before moving to wire racks to cool completely.
TIP: Parchment paper helps prevent the marshmallows from sticking to your pan.
When scooping the cookies, tuck the marshmallows into the inside of them so they are not touching the pan to prevent the sugars from melting.

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📖 Recipe
Chocolate Chunk Marshmallow Cookies
Ingredients
- ½ cup unsalted butter softened
- ¾ cup packed brown sugar
- ¼ cup sugar
- 1 egg large
- 1 teaspoon vanilla extract
- 1 ½ cups flour
- 1 teaspoon baking soda
- ½ teaspoon baking powder
- ½ teaspoon salt
- 1 ½ cup chocolate chunks plus extra for topping
- 1 ½ cup mini marshmallows plus extra for topping
Instructions
- Preheat oven to 350° and spray cookie sheet with non-stick spray.
- Beat together softened butter, brown sugar, and granulated sugar until smooth.
- Add in egg and vanilla extract and mix.
- Slowly add in flour, baking soda, baking powder, and salt.
- Gently blend ingredients together without over mixing.
- Using a spoon, gently stir in chocolate chunks and mini marshmallows.
- Using a cookie scoop, drop onto greased cookie sheet.
- Bake for about 11 minutes or until tops and edges of cookies are golden.
- Let cookies cool before moving to wire racks to cool completely.
Notes
Nutrition
Dana is an experienced recipe creator who crafts easy and delicious recipes for all levels of home cooks.
Her recipes range from classic comfort foods to healthy and nutritious meals, and she is always on the lookout for new and exciting ways to bring flavor and variety to the table.
Danielle says
Wow, these look amazing! I’m really craving cookies now!
jim rupert says
the cookies suck!
christine says
I’ve been hoping for a day that’s not too hot so I can bake. Now I know what I’ll be baking. I love the ooey gooey!
Kelsey says
These are the best looking cookies ever! They have so much deliciousness going on!
Dahn says
I love an ooey gooey cookie. The thing that gets me in trouble EVERY time is that I can’t wait until the darn cookies cool off enough to eat ?
Jessica Levinson says
Do this look amazing or what?!! I bet these disappear so fast!
Candice says
Ooo I have two guys who would love these cookies. I would never have paired up marshmallow and cookies. This recipe is on my to do list!
Shanika says
Now this is what you call a COOKIE! So gooey and soft! Yum! Pinning or later!
Jenni LeBaron says
I am totally making cookies now after seeing this. Love anything with marshmallow!
Cynthia | What A Girl Eats says
Oh my! Those look soooo chewy and delicious!
Noel Lizotte says
Oh! My! I’ll never be able to wait until these are cool enough to eat … I’ll be burning my mouth for sure! Love this combination!
Lisa Bryan says
Omg, I’m loving that marshmallowy pull apart! So gooey and good with the chocolate as well. Yum!!
Shanika says
Now this is what you call a COOKIE! So gooey and soft! Yum! Pinning or later!
Jenni LeBaron says
I am totally making cookies now after seeing this. Love anything with marshmallow!
Cynthia | What A Girl Eats says
Oh my! Those look soooo chewy and delicious!
Noel Lizotte says
Oh! My! I’ll never be able to wait until these are cool enough to eat … I’ll be burning my mouth for sure! Love this combination!
Caitlin says
These cookies turned out amazing. We only put in 1 cup of marshmallows and 1 cup of chocolate chips and it turned out great. The only thing is the cookies spread out a little too much, so next time I might add a bit more flour!
Sophie says
@Caitlin, you should chill it