The BEST Gooey & Chewy Chocolate Marshmallow Cookies

Name: Chocolate Marshmallow Cookies
Prep time: 10 min
Cook time: 10 min
Total time: 35 min
Ingredients: 190 g (1 ¼ cups) plain flour; 50 g (½ cup) cocoa powder; 1 tsp bi-carbonate soda; pinch salt; 125 g butter (melted); 140 g (⅔ cup) brown sugar; 55 g (¼ cup) caster sugar; 2 tsp vanilla extract; 1 egg; 50 g (1 cup) mini marshmallows

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These chocolate marshmallow cookies combine a soft, chewy cookie stuffed with gooey marshmallows to create the best chocolate cookie ever!

Taking just 10 minutes to prepare, and requiring only 15 minutes chilling time, these cookies are PERFECT for satisfying any chocolate cravings!

Two chocolate marshmallow cookies, the top one broken in half to show the marshmallow centre.

Is there ever not a time for chocolate cookies? I don't think so!!

Whether you are a fan of the classic chocolate chip cookie, crave a big chocolate hit with double chocolate cookies or salted brownie cookies, or prefer yours to come with a hazelnut kick like these 3 ingredient Nutella cookies, I believe there is a chocolate cookie recipe for everyone!

This easy chocolate marshmallow cookie recipe is perfect for any chocolate rocky road fans, with a rich, soft chocolate cookie dough surrounding a centre of chewy melted marshmallows. If you love the combination of chocolate and marshmallow, then be sure to check out my wagon wheel slice too!

A hand breaking a chocolate cookie in half to show the chewy marshmallow centre.

Why You're Going To Love This Recipe

Quick and easy to make - these cookies look impressive but are SO easy to make! Just mix, chill, then bake for 10 minutes!
Full of chocolate flavour - perfect for any chocolate fan!
Basic ingredients - chocolate marshmallow cookies are made with simple baking ingredients.
Conventional and Thermomix - both methods are included in the recipe card at the end of the post.

What You Need

You only need a handful of easy to find ingredients to make these chocolate cookies with marshmallows, in fact you probably already have them in your pantry!

Note: Scroll to the recipe card at the bottom for the ingredients quantities and full detailed method.

Ingredients needed to make the cookies weighed out and placed in individual bowls.

Plain flour - also known as all-purpose flour.
Cocoa powder - buy the best quality cocoa powder you can afford, it will give the best dark chocolate flavour and richest colour to all your baking.
Bi-carbonate soda - helps create a light chocolate cookie.
Salt - brings out the flavour of the cookies.
Butter - I recommend using unsalted butter and adding a pinch of salt. If you use salted butter, simply omit the pinch of salt.
Brown sugar - gives the cookies a soft, moist centre and deep flavour.
Caster sugar - also known as superfine sugar. Caster sugar gives the cookies delicious crispy edges!
Vanilla extract - or vanilla bean paste. This enhances the chocolate flavour!
Egg - I use size large eggs which weigh approx. 60g each.
Mini marshmallows - if you can't find mini marshmallows use regular marshmallows and chop them into pieces.

Equipment Required

With no special equipment required, these chocolate marshmallow cookies make a great recipe for kids to try.

2 bowls, a hand whisk and a spoon - or a Thermomix - for mixing the dough.
2-3 baking trays - for baking the cookies on. Line with baking paper to stop the cookies from sticking to the trays.
Oven - I use a fan-forced oven. If you use a conventional oven, increase the temperature by 10-20 degrees celsius.

An overhead shot of a chocolate cookie with marshmallow inside.

Step By Step Instructions

These simple chocolate mini marshmallow cookies take just 10 minutes to prepare, and require only 15 minutes chilling time!

Note: Scroll to the recipe card at the bottom for the ingredients quantities and full detailed method.

Step 1 - Combine The Dry Ingredients

Preheat the oven. Line 2-3 baking trays with baking paper.

Sift the plain flour and cocoa powder into a bowl. Add the bi-carbonate of soda and salt and stir to combine.

Cocoa powder and flour in a mixing bowl.

Step 2 - Mix The Wet Ingredients

In another bowl, mix the melted butter with the brown sugar, caster sugar and vanilla extract and whisk together until combined.

Melted butter whisked with brown sugar, white sugar and vanilla.

Add the egg to the melted butter mixture and whisk again to combine.

An egg added to the melted butter mixture in a glass bowl with a whisk.

Step 3 - Combine The Wet And Dry Ingredients

Add the dry ingredients to the egg-butter mixture.

Dry ingredients added to the butter-egg mixture in the mixing bowl.

Stir with a spoon until combined, taking care not to over-mix, then chill in the fridge for 15 minutes..

The combined cookie dough in the mixing bowl with a rubber spatula.

Step 4 - Fill With Marshmallows

Take a heaped tablespoon of the chilled cookie dough, form it into a ball and then flatten it. Place several mini marshmallows in the centre of the dough.

A hand holding a flattened piece of chocolate cookie dough filled with mini marshmallows placed on it.

Fold the mixture over to form a ball, enclosing the marshmallows.

A hand holding a rolled filled chocolate cookie.

Step 5 - Bake

Place 4-5 of the stuffed cookie dough balls onto each lined baking tray. The cookies will spread, so leave a large gap between them.

Four cookies on a lined baking sheet ready to be baked.

Bake in the preheated oven until the cookies are crinkly and the marshmallow has just started to peek through.

Allow to cool on the trays before transferring to a wire rack to cool completely.

Close up of a baked marshmallow chocolate cookie.

Expert Tips

Avoid over-mixing the cookie dough - this can make the cookies tough.
Chill the dough - this not only makes the dough easier to hold and stuff full of marshmallows, but it solidifies the fat, meaning the cookies spread less during baking.
Lining the baking trays - make sure you line the baking trays with baking paper or baking parchment so the cookies don't stick.
Cooling - chocolate marshmallow cookies are soft and fragile whilst warm from the oven, so leave them on the trays for 10 minutes before moving to a wire cooling rack to cool completely.
Storage - store the cookies in an airtight container for up to 5 days.

FAQs

Can I make these cookies with regular sized marshmallows?

Absolutely! Just chop the marshmallows up before placing in the cookie dough.

Can I freeze chocolate marshmallow cookies?

Yes! These cookies will freeze for up to 1 month.

Do I have to chill the dough?

I do recommend that you chill the dough as it makes it so much easier to work with when folding around the marshmallows and helps to prevent them from spreading too much.