Mary Berry‘s blondie recipe transforms simple pantry staples into irresistibly chewy butterscotch squares that rival any chocolate brownie. These golden-hued treats feature a rich, caramel-like flavor with crispy edges and a soft, fudgy center that’s become a British baking favorite. Unlike their chocolate cousins, blondies let the warm notes of brown sugar and vanilla shine through in every bite.
Mary Berry‘s blondies showcase the beauty of simple, quality ingredients coming together in perfect harmony. These butterscotch-scented bars require just pantry staples, making them an ideal last-minute treat when cravings strike.
- 1 cup (225g) unsalted butter, plus extra for greasing
- 1½ cups (300g) light brown sugar, packed
- 3 large eggs, room temperature
- 1 teaspoon vanilla extract
- 2½ cups (300g) all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon salt
- 1 cup (150g) white chocolate chips
- ½ cup (75g) chopped walnuts or pecans (optional)
Note: For the authentic Mary Berry experience, use European-style butter with higher fat content. The brown sugar is crucial for achieving that signature butterscotch flavor that makes these blondies irresistibly moreish.
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Step 1: Prepare Your Baking Pan and Preheat the Oven
Begin by preheating your oven to 180°C (160°C fan)/350°F/Gas Mark 4. This ensures your oven reaches the perfect temperature while you prepare the batter. Line a 20cm x 30cm (8″ x 12″) baking pan with parchment paper, making sure to leave some overhang on the sides. This overhang will act as handles, making it much easier to lift the blondies out once they’re baked and cooled. Lightly grease the parchment with butter to prevent any sticking.
Step 2: Melt the Butter and Combine with Sugar
Place the unsalted butter in a large saucepan over low heat. Stir occasionally until completely melted and smooth. Remove the pan from the heat and add both the light brown sugar and granulated sugar. Whisk vigorously for about two minutes until the mixture is thoroughly combined and slightly glossy. The residual heat from the butter will help dissolve some of the sugar crystals, creating that signature butterscotch flavor.
Step 3: Add the Eggs and Vanilla
Allow the butter and sugar mixture to cool for approximately five minutes—this is crucial to prevent the eggs from scrambling. Once cooled, crack in the eggs one at a time, beating well after each addition. Add the vanilla extract and mix until the batter becomes smooth, thick, and pale in color. You should notice the mixture becoming lighter and more voluminous as you incorporate air.
Step 4: Incorporate the Dry Ingredients
In a separate bowl, sift together the plain flour, baking powder, and salt. This sifting step ensures there are no lumps and helps create a lighter texture. Gradually fold the dry ingredients into the wet mixture using a spatula or wooden spoon. Use gentle folding motions rather than vigorous stirring to avoid developing too much gluten, which could make your blondies tough. Mix just until no flour streaks remain.
Step 5: Add the White Chocolate and Pecans
Roughly chop your white chocolate into chunks—aim for pieces about the size of chocolate chips for even distribution. Fold the white chocolate chunks and chopped pecans into the batter, reserving a small handful of each to sprinkle on top if desired. The batter will be thick and luxurious at this stage.
Step 6: Bake to Golden Perfection
Pour the batter into your prepared pan, using a spatula to spread it evenly into all corners. The surface should be relatively smooth and level. Scatter any reserved chocolate and nuts over the top. Bake for 25-30 minutes until the top is golden brown and a skewer inserted into the center comes out with just a few moist crumbs attached—not wet batter. The edges should be set while the center remains slightly soft.
Step 7: Cool and Slice
Remove from the oven and allow the blondies to cool completely in the pan on a wire rack—this takes about an hour. Once cooled, use the parchment overhang to lift them out. Cut into 16 squares using a sharp knife, wiping the blade clean between cuts for neat edges.
To elevate your blondie game, consider these practical tips. For an extra gooey center, bake the blondies for 23-25 minutes. If you prefer a firmer texture, bake for 27-30 minutes. You can also customize the recipe by adding different mix-ins, such as dried cranberries or chopped nuts. To make the blondies more visually appealing, dust them with powdered sugar before serving.
- For a salted blondie, sprinkle flaky sea salt on top before baking.
- Experiment with different flavors by using dark brown sugar or muscovado sugar.
- Cut the blondies into bite-sized squares for a perfect dessert buffet.
Serve the blondies warm with a scoop of vanilla ice cream or whipped cream for a decadent treat.
Each blondie square (based on 16 servings) contains approximately:
- Calories: 285
- Total Fat: 14g (including 8g saturated fat)
- Carbohydrates: 38g
- Sugar: 26g
- Protein: 3g
- Sodium: 180mg
- Fiber: 1g
These values may vary depending on specific ingredients used and portion sizes. For a lighter version, consider reducing the sugar slightly or using a blend of white and whole wheat flour.
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Trained in classic French technique but raised on slow-cooked ribs and spicy rubs, she blends culinary skill with smoke and soul.
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