Marshmallow brownies recipe

(608 ratings)

Come try our delicious recipe for dark chocolate and mallow brownies. Dense and deliciously chocolatey, this easy recipe will make an impressive dessert.

Marshmallow brownies
  • healthy
Preparation Time20 mins
Cooking Time30 mins
Total Time50 mins
Cost RangeCheap
Nutrition Per PortionRDA
Calories262 Kcal13%
Sugar28.4 g32%
Fat11.3 g16%
Saturated Fat6.5 g33%
Salt0.06 gRow 4 - Cell 2
Protein3.6 g7%
Carbohydrates36 g14%
Salt0.06 gRow 7 - Cell 2

These dark chocolate and marshmallow brownies are little bites of heaven.

Dense and truffley in texture, and deliciously chocolatey - our marshmallow brownies are the ultimate teatime snack or post-dinner treat. Taking just 50 minutes to make and bake, and using seven ingredients in total - this recipe is super easy (and cheap) to do and one we recommend for baking with kids. Simply finish off with a light fluffy topping of marshmallows and a drizzle of chocolate sauce for extra indulgence.


  • 100g 70% cocoa chocolate
  • 130g unsalted butter
  • 350g dark brown sugar
  • 4 medium eggs, beaten
  • 130g self raising flour
  • 100g mini marshmallows
  • Chocolate sauce to drizzle




  1. Pre-heat oven to 180°C/350°F/Fan 160°C/Gas Mark 4. Grease and line a 30 x 20cm rectangular cake tin with baking parchment. Break the chocolate into a heatproof bowl; add the butter and set over a saucepan of barely simmering water until melted. Remove from the water, stir in the sugar; cool for 10 mins.
  2. Gradually whisk in the eggs to make a thick glossy mixture. Sift the flour on top and carefully fold the ingredients together until well combined.
  3. Transfer to the prepared tin, smooth the top and bake in the oven for about 30 mins until the mixture is risen, has a slight crust yet is still slightly soft underneath. Scatter or arrange the marshmallows on top and leave the brownies to cool in the tin.
  4. To serve, slice into 15 portions and drizzle with chocolate sauce.

Top tips for making marshmallow brownies recipe:

For more chocolate flavour, add 75g milk, plain or white chocolate chunks to the mixture with the flour.

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Jessica Dady
Food Editor

Jessica Dady is Food Editor at GoodtoKnow and has over 12 years of experience as a digital editor, specialising in all things food, recipes, and SEO. From the must-buy seasonal food hampers and advent calendars for Christmas to the family-friendly air fryers that’ll make dinner time a breeze, Jessica loves trying and testing various food products to find the best of the best for the busy parents among us. Over the years of working with GoodtoKnow, Jessica has had the privilege of working alongside Future’s Test Kitchen to create exclusive videos - as well as writing, testing, and shooting her own recipes. When she’s not embracing the great outdoors with her family at the weekends, Jessica enjoys baking up a storm in the kitchen with her favourite bakes being chocolate chip cookies, cupcakes, and a tray of gooey chocolate brownies