Let's Bake

Dark Chocolate Marshmallow Cookies

Yield Makes 14 cookies 1x
Prep: 25 minutesCook: 12 minutesTotal: 37 minutes

Amazing chewy chocolate marshmallow cookies.


  • 115 grams (1/2 cup / 1 stick) unsalted butter, room temperature
  • 100 grams (1/2 cup) caster sugar or granulated sugar
  • 90 grams (1/2 cup) brown sugar
  • 1 teaspoon vanilla extract
  • 1 large egg
  • 40 grams (1/2 cup) cocoa powder, sifted
  • 140 grams (1 cup) plain flour or all purpose flour
  • 1/2 teaspoon baking soda
  • 30 grams (1/2 cup) mini marshmallows
  • 30 grams (1/4 cup) roasted salted peanuts
  • 100 grams (2/3 cup) dark chocolate chunks
  • Sea salt


  1. Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced. Line two cookie or oven trays with baking or parchment paper.
  2.  In a large mixing bowl, add butter and sugars and beat with an electric mixer until pale and creamy. Add vanilla and egg and mix until combined.
  3. Next, add cocoa powder, flour and baking soda. Beat until a soft dough forms. Add marshmallows, peanuts and chocolate to your dough and stir briefly.
  4. Roll the cookie dough into balls, approximately 1.5 tablespoons each, and place on prepared trays, ensuring there is enough room for the cookie to spread out.
  5. Bake for approximately 10-11 minutes. Sprinkle with sea salt. Leave to cool for at least 5 minutes on the tray before carefully transferring to a wire rack to cool completely.


*If you prefer your cookies thicker, you can add 35 grams (1/4 cup) more plain flour. The cookies will turn out more cakey, like my Chunky Walnut Chocolate Cookies.

Nutrition Information

Serving Size: 1 cookie Calories: 220 Sugar: 17.8 g Sodium: 124.8 mg Fat: 10.5 g Carbohydrates: 30.7 g Protein: 3 g Cholesterol: 31.4 mg
Nutrition information is a guide only.
Author: Jessica HolmesCategory: CookiesCuisine: Dessert
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