Rocky road brownies recipe

(74 ratings)

We love this tasty little rocky road brownies recipe, based on the American classic rocky road. Every bite of these brownies are a true chocolatey heaven.

Rocky road brownies
  • healthy
Preparation Time20 mins
Cooking Time30 mins
Total Time50 mins
Cost RangeCheap
Nutrition Per PortionRDA
Calories462 Kcal23%
Sugar34.4 g38%
Fat29 g41%
Saturated Fat12.5 g63%
Salt0.2 gRow 4 - Cell 2
Protein7 g14%
Carbohydrates42.2 g16%
Salt0.2 gRow 7 - Cell 2

Our recipe for rocky road brownies is based on the classic American rocky road treat, a no-bake slice packed with milk chocolate and marshmallows.

This delicious twist on our chocolate brownie recipe takes only 20 minutes to prepare as it's such a simple and easy recipe, even though there are quite a few ingredients. Unlike a classic rocky road which you just pour into a tin and allow to set, you will need to bake these brownies. But just like the original, each piece still contains caramel-filled sweets, nuts, and gooey marshmallows. It's topped with a thick fudgey icing which all the lovely rocky road toppings stick to like glue.


  • 350g softened butter
  • 500g sugar
  • 150g good quality cocoa powder
  • 100ml golden syrup
  • ½ tsp salt
  • 6 free-range eggs
  • 200g plain flour

For the fudge icing:

  • 300ml double cream
  • 100ml milk
  • 100ml golden syrup
  • 400g good quality dark chocolate, 70% cocoa solids

For the rocky road topping:

  • 2 handfuls soft caramel sweets
  • 50g pistachios
  • 100g salted peanuts
  • 2 handfuls mini marshmallows




  1. Boil the cream, milk and syrup. Remove the pan from the heat and let the liquid cool a few degrees.
  2. Finely chop the chocolate and fold it into the warm cream, so the chocolate melts.
  3. Spread the icing over the cake and sprinkle with chopped caramels, pistachios, peanuts and marshmallows.
  4. Refrigerate until the icing is firm and then cut into squares.

Top tips for making rocky road brownies:

To find out if your brownies are done yet, poke through the middle with a toothpick. If the toothpick comes out moist with chocolate mixture, the brownies aren't finished yet. But if the toothpick just comes out with melted marshmallow then the brownies are probably done.

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Jessica Dady
Food Editor

Jessica Dady is Food Editor at GoodtoKnow and has over 11 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