Tahini-Swirl Espresso Brownies
Fudgy, grown-up and glossy
These brownies are unashamedly fudgy, glossy on top and deeply chocolatey, with two grown-up touches that lift them well beyond the usual tray bake. A spoonful of espresso powder in the batter sharpens and amplifies the chocolate without tasting of coffee, while a marbled swirl of tahini ribbons through with a nutty, faintly bitter richness. The contrast is what makes them moreish. Bake until only just set, then chill for the dense, truffle-like centre that defines a proper brownie.
Tahini-Swirl Espresso Brownies
Ingredients
- 200g dark chocolate (about 70% cocoa), chopped
- 150g unsalted butter
- 1 tbsp instant espresso powder
- 200g caster sugar
- 50g soft light brown sugar
- 3 large eggs
- 1 tsp vanilla extract
- 90g plain flour
- 30g cocoa powder
- 1/2 tsp fine salt
- 4 tbsp tahini, well stirred
Method
- Preheat the oven to 170C fan and line a 20cm square tin with baking parchment.
- Melt the chopped chocolate and butter together gently, then stir in the espresso powder and leave to cool slightly.
- Whisk the caster sugar, brown sugar, eggs and vanilla together vigorously for 2 minutes until pale and thickened.
- Pour in the warm chocolate mixture and whisk until glossy and smooth.
- Sift in the flour, cocoa powder and salt, and fold until just combined with no dry streaks.
- Scrape the batter into the prepared tin and level the surface.
- Spoon the tahini in dollops over the top, then drag a skewer through to create a marbled swirl.
- Bake for 22 to 25 minutes until the top is set and papery but the centre still has a slight wobble.
- Leave to cool completely in the tin, then chill for an hour for the fudgiest texture.
- Lift out and cut into 16 squares with a warm, clean knife.
3 The Story
The brownie sits somewhere between a cake and a confection, and the version most people love best leans firmly towards the fudgy end. That dense, glossy texture comes down to ratios and restraint: plenty of chocolate and butter, relatively little flour, and whisking the eggs and sugar hard so the top bakes into that characteristic crackly, paper-thin crust. The crust is sugar and egg forming a meringue-like skin on the surface, which is why beating air into the sugar and eggs at the start matters so much. Underbaking, then chilling, sets the centre into something close to a soft truffle.
Espresso powder is the first twist, and a near-invisible one. Used in small amounts it does not make brownies taste of coffee; instead it deepens and rounds out the flavour of the chocolate. This works because coffee and chocolate share many of the same aromatic compounds, both being roasted seeds whose flavours develop through similar reactions. Adding a little coffee is a long-standing baker’s trick for making chocolate taste more intensely of itself, and instant espresso powder dissolves cleanly into a warm batter without adding grittiness.
The tahini swirl is the second twist and the one people notice. Tahini is a paste of ground sesame seeds, a cornerstone of cooking across the Middle East and the eastern Mediterranean, where it lends its nutty, savoury body to everything from hummus to dressings to sweets. It has a natural, slightly bitter edge that plays beautifully against rich chocolate, in much the same way that peanut butter does, but with a more grown-up, less sugary character. In the sweet kitchen it appears in halva and in tahini cookies, so swirling it through a brownie is an extension of an established pairing rather than a novelty.
Swirling rather than stirring keeps the two elements distinct, so you get ribbons of pale, sesame-rich paste running through the dark crumb. Each bite alternates between fudgy chocolate and nutty tahini, the bitterness of one balancing the richness of the other. Stirring the tahini well before use is worth a moment, as the oil separates in the jar and you want a smooth, pourable paste for the cleanest marbling.
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