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    Home » Cookie recipes

    By Emily Leary. Last updated Feb 11, 2022. Green links are Amazon links. As an Amazon Associate I earn from qualifying purchases.

    The ultimate marshmallow cookie

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    Big, chewy, soft chocolate cookies packed with marshmallows and chocolate chips. Once you've tried these, you'll agree they're the ultimate marshmallow cookie!

    Overhead shot of a hand holding an ultimate marshmallow cookie with a mummy too logo in the lower-left corner

    Making these cookies is an absolute breeze. First, you'll beat butter, sugar, vanilla and golden syrup together, then beat in an egg.

    Next, you'll fold in flour and cocoa before stirring generous handfuls of chocolate chips and mini marshmallows into the mix. Finally, you'll scoop onto lined baking sheets and bake. SO easy!

    The cookies smell absolutely incredible when they're baking in the oven. As the cookie dough spreads, you can see it turning impossibly gooey before your eyes, and it's a challenge to find the patience to let them firm up enough to lift them from the tray.

    Front angle shot of stacked marshmallow cookies with a mummy too logo in the lower-left corner

    When you bite into a marshmallow cookie, it'll tick off every box for what a great cookie should be. It's crisp at the edges, gooey and chewy in the middle, and packed with chocolate flavour. They're simply wonderful.

    Front view shot of a hand holding a stack of ultimate marshmallow cookie with a mummy too logo in the lower-left corner

    Here's how to make 12 of my ultimate marshmallow cookies.

    Ingredients

    • 130 g (1 stick + 4 tbsp) salted butter softened
    • 2 tbsp golden syrup US sub - corn syrup
    • 1 tsp vanilla extract
    • 160 g (¾ cup + 1 tbsp) white caster sugar (superfine sugar)
    • 1 medium free range eggs
    • 235 g (1⅔ cups) plain white flour (all purpose flour)
    • 1 tsp baking powder
    • 20 g (3 tbsp) cocoa powder (dutch processed)
    • 60 g (⅓ cup) mini marshmallows vegetarian, if required
    • 100 g (½ cup) milk chocolate chips

    Equipment

    • Weighing scales
    • Measuring spoons
    • Electric whisk
    • Wooden spoon
    • Large mixing bowl
    • Nonstick baking sheet
    • Parchment/baking paper

    Instructions

    Preheat the oven to 200C (180C fan assisted).

    Put the butter, golden syrup, vanilla and sugar in a large mixing bowl.

    Overhead shot of butter, golden syrup, vanilla and sugar in a large mixing bowl

    Beat until fluffy

    Overhead shot of fluffed butter in a large clear bowl

    Add the egg.

    Overhead shot of fluffed butter and egg in a large clear bowl

    Beat until well combined

    Overhead shot of mixed butter in a large clear bowl

    Add the flour, cocoa and the baking powder.

    Overhead shot of flour, cocoa and baking powder in a large clear bowl

    Mix well.

    Overhead shot of mixed dough in a large clear bowl

    Add the marshmallows and chocolate chips.

    Overhead shot of chocolate cookie dough, marshmallows and chocolate chips in a large clear bowl

    Mix again.

    Overhead shot of mixed cookie dough with marshmellows in a large clear bowl

    Put large, 5cm (2 inch) scoops a good 2-3 inches apart on a baking sheet lined with baking paper. Don't flatten them.

    Overhead shot of 3 cookie dough balls on a lined baking tray

    Bake for 10 minutes. Allow the cookies to cool on the tray until firm - this may take up to 10 minutes. Transfer to a wire rack to cool completely.

    Overhead shot of ultimate marshmallow cookies on a cooling rack with a mummy too logo in the lower-left corner

    Print this ultimate marshmallow cookies recipe

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    4.7 from 3 votes

    The Ultimate Marshmallow Cookie Recipe

    Big, chewy, soft chocolate cookies packed with marshmallows and chocolate chips. Once you've tried these, you'll agree they're the ultimate marshmallow cookie!
    Prep Time10 minutes mins
    Cook Time10 minutes mins
    Total Time20 minutes mins
    Course: Desserts and sweet treats
    Cuisine: American
    Diet: Vegetarian
    Servings: 12 cookies
    Author: Emily Leary

    Ingredients

    • 130 g (1 stick + 4 tbsp) salted butter softened
    • 2 tbsp golden syrup US sub - corn syrup
    • 1 tsp vanilla extract
    • 160 g (¾ cup + 1 tbsp) white caster sugar (superfine sugar)
    • 1 medium free range eggs
    • 235 g (1⅔ cups) plain white flour (all purpose flour)
    • 1 tsp baking powder
    • 20 g (3 tbsp) cocoa powder (dutch processed)
    • 60 g (⅓ cup) mini marshmallows vegetarian, if required
    • 100 g (½ cup) milk chocolate chips

    Equipment

    • Weighing scales
    • Measuring spoons
    • Electric whisk
    • Wooden spoon
    • Large mixing bowl
    • Nonstick baking sheet
    • Parchment/baking paper

    Instructions

    • Preheat the oven to 200C (180C fan assisted / 390F).
    • In a large bowl, beat together the butter, golden syrup, vanilla and sugar until fluffy
    • Beat in the egg until well combined
    • Add the flour, cocoa and the baking powder and mix well.
    • Add the marshmallows and chocolate chips and mix again.
    • Put large, 5cm (2 inch) scoops a good 2-3 inches apart on a baking sheet lined with baking paper. Don't flatten them.
    • Bake for 10 minutes.
    • Allow the cookies to cool on the tray until firm - this may take up to 10 minutes. Transfer to a wire rack to cool completely.

    Video

    Nutrition

    Calories: 280kcal | Carbohydrates: 42g | Protein: 3g | Fat: 12g | Saturated Fat: 7g | Cholesterol: 38mg | Sodium: 94mg | Potassium: 93mg | Fiber: 1g | Sugar: 24g | Vitamin A: 309IU | Calcium: 37mg | Iron: 1mg
    * Note: nutritional information is estimated, based on publicly available data. Nutrient values may vary from those published. Information on this website should not be taken as medical advice. Cuisines identify the primary region of inspiration for a dish.
    Tried this recipe?Snap a pic and tag @amummytoo on Instagram or tag @EmilyLearyCooks on Twitter. I can't wait to see your posts!

    Pin this marshmallow cookie recipe

    Three process images demonstrating how to make gooey ultimate marshmallow cookies, Some text at the top of the image describe the image for Pinterest.
    Forward shot of a stack of ultimate marshmallow cookies. At the bottom of the image there's some text describing the image for Pinterest.
    Forward shot of a stack of ultimate marshmallow cookies. At the top of the image there's some text describing the image for Pinterest.
    Overhead shot of ultimate marshmallow cookies on a cooling rack. At the top of the image there's some text describing the image for Pinterest.
    Forward shot of a stack of ultimate marshmallow cookies. At the top of the image there's some text describing the image for Pinterest.
    Overhead shot of a stack of ultimate marshmallow cookies. At the top right hand side of the image there's some text describing the image for Pinterest.

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    Comments

      4.67 from 3 votes (3 ratings without comment)

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    1. Fiver Feeds says

      September 18, 2014 at 5:43 pm

      Looks lovely! I really enjoy reading your blog Emily, great recipes!

      Reply
    2. Kim Carberry says

      September 18, 2014 at 9:41 am

      YUM! They look so good!

      Reply

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