zoom Martha's mocha swirl blondies

    Save to your scrapbook

    Martha's mocha swirl blondies

    This will be saved to your scrapbook

    You can also add it to one of your existing cookbooks


      Email this recipe to a friend

      Send a link to this recipe to a friend or your own e-mail address as a reminder

      * mandatory

    Martha's mocha swirl blondies

    • Vegetarian
    • Preparation time: 30 minutes + cooling
    • Cooking time: 25 minutes to 30 minutes
    • Total time: 55-60 minutes + cooling

    Makes: 16


    150g butter
    150g light brown soft sugar
    100g caster sugar
    75g white chocolate, broken into cubes
    2 British Blacktail Medium Free Range Eggs
    200g plain flour
    ½ tsp baking powder
    2 tsp espresso powder
    2 tbsp cocoa powder
    Sprinkling of cacao nibs


    1. Preheat the oven to 180ºC, gas mark 4. Grease and line a 20x20cm square tin with baking parchment. In a large saucepan, heat the butter, light brown sugar and caster sugar together until the mixture has completely melted. Remove from the heat and allow to cool for 5 minutes, then add the chunks of white chocolate. Stir until melted, then allow the mixture to cool to room temperature – if you don’t allow it to cool, the eggs will scramble when you add them.

    2. Beat the eggs into the cooled mixture using a wooden spoon. Sieve over the flour and baking powder and mix until well combined. Dissolve 2 tsp coffee powder in 1 tsp of boiling water, then stir this paste into the batter.

    3. Spoon three-quarters of the mixture into the prepared tin and use a spatula to spread it out evenly. Add the cocoa powder to the remaining mixture and mix well. Use a teaspoon to dollop this chocolate mixture randomly over the coffee mixture, then use a skewer to swirl the mixtures together. Sprinkle over the cacao nibs.

    4. Bake the blondies for 25-30 minutes, or until risen with a slight wobble in the centre. Leave in the tin to cool completely, preferably overnight (if you can resist!) for them to become fudgy and dense before slicing. These blondies will keep for 1-2 weeks in an airtight container.

    Your recipe note

    Edit your recipe note

    Martha’s tip

    The best blondies have the right amount of squidge in the middle. Get them out of the oven when there is still a slight jiggle in the centre – they will continue to cook as they cool, leaving you with soft, squidgy blondies instead of cakey ones.


    Average user rating

    4 stars