Chocolate brownies are one of the great baking achievements - dense, fudgy, and intensely chocolatey with a crinkled, papery top and a gooey, almost molten centre that sets into something deeply satisfying as they cool. A great brownie sits squarely between a cake and a confection: not cakey, not a cookie, but something entirely its own - and getting it right is one of the most rewarding things a home baker can do.
This recipe produces the fudgy, dense brownie style - the kind with a shiny, crackled top and a centre that gives slightly when pressed, rather than a cakey brownie that bounces back. The difference lies in the ratio of fat to flour (high fat, low flour), the use of both dark chocolate and cocoa powder for maximum depth, and the critical step of not overbaking. Brownies continue cooking on the hot tin after they come out of the oven - pulling them out while the centre looks underdone is not a mistake, it's the method.
Brown butter adds an extra layer of nutty, caramel complexity that elevates these above a standard brownie recipe, and the addition of a pinch of flaky sea salt on top before baking brings out the chocolate flavour in the same way salt enhances any sweet bake. These keep well for several days, improve after the first day, and freeze brilliantly. All ingredients are available at any UK supermarket.
Ingredients
For the brownies
- 200 g Unsalted Butter
- 200 g Dark Chocolate (70%) , roughly chopped
- 3 Medium Eggs , at room temperature
- 1 Egg Yolk , at room temperature
- 280 g Caster Sugar
- 30 g Cocoa Powder , (use a good quality Dutch-process cocoa - Green & Black's or Bournville are widely available)
- 0.5 tsp Fine Salt
- 1 tsp Vanilla Extract
For finishing
- Flaky Sea Salt (Maldon or similar) , to sprinkle
Optional additions
- 100 g Milk or White Chocolate Chunks , folded in with the flour
- 80 g Walnut Halves , roughly chopped, folded in with the flour
- 1 tbsp Instane Espresso Powder , dissolved in 1 tsp hot water, added with the vanilla (deepens the chocolate flavour without adding coffee taste)
Method
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Brown the butter. Place the butter in a light-coloured saucepan over a medium heat. Melt, then continue cooking, swirling occasionally, for 4–6 mins until golden brown with brown specks forming at the base and a nutty, caramelised aroma. Pour immediately into a large heatproof mixing bowl, scraping out all the brown bits. Add the chopped dark chocolate to the hot brown butter and leave for 2 mins, then stir until completely melted and smooth. Leave to cool for 10 mins.
Tip: Browning the butter adds a deep, nutty complexity that a standard melted butter brownie simply can't match. The brown butter and chocolate melt together in the same bowl, so it's no extra washing up - and the payoff in flavour is significant. -
Preheat your oven to 170°C fan / 190°C conventional / Gas Mark 5. Grease and line a 20x20cm square baking tin with baking paper, leaving overhang on two sides for easy lifting.
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In a large bowl, whisk together the eggs, egg yolk, caster sugar, and vanilla extract for 3–4 mins using an electric hand whisk or stand mixer until the mixture is thick, pale, and has roughly doubled in volume - it should fall from the whisk in thick ribbons. This step is responsible for the characteristic crinkled, papery top of a great brownie.
Tip: Whisking the eggs and sugar thoroughly until pale and thick is the key to a shiny, crinkled brownie top. The air incorporated at this stage creates the signature papery crust during baking. Don't rush it - a good 3–4 mins of vigorous whisking makes a visible difference. -
Pour the cooled chocolate and butter mixture into the egg and sugar mixture and fold gently with a large spatula until just combined.
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Sift in the flour, cocoa powder, and salt. Fold gently until just combined - stop as soon as no dry streaks remain. Fold in any optional additions if using.
Tip: A few gentle folds are all that's needed once the flour goes in - overmixing at this stage develops the gluten and produces a tougher, cakier brownie rather than a dense, fudgy one. Less is more. -
Pour the batter into the prepared tin and smooth the surface. Sprinkle lightly with flaky sea salt.
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Bake for 22–25 mins until the top is set, crinkled, and slightly dull rather than wet and glossy, and a skewer inserted 3cm from the edge comes out with just a few moist crumbs - not clean, and definitely not wet batter. The centre should still feel soft when gently pressed.
Tip: The single most important rule of brownies: pull them out earlier than feels comfortable. The centre should look underdone and feel soft - it will continue cooking on the hot tin as it cools and will set to the perfect fudgy consistency. A skewer coming out completely clean means they're overbaked and will be dry rather than fudgy. -
Leave to cool completely in the tin - at least 1 hour, ideally 2 - before lifting out using the baking paper overhang and cutting into 16 squares with a sharp knife. For the cleanest cuts, refrigerate the cooled brownies for 30 mins before slicing, and wipe the knife clean between each cut.
Air Fryer Method
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Preheat the air fryer to 150°C for 3–5 mins. Grease and line a small square tin or silicone baking mould that fits your basket - a 15–18cm tin works well for most standard air fryers. If using a full 20x20cm batch, bake in two rounds.
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Pour the batter into the prepared tin to a depth of no more than 3cm. Sprinkle with flaky sea salt.
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Cook for 18–22 mins until the top is set and crinkled and a skewer inserted 3cm from the edge comes out with moist crumbs. The centre should still feel slightly soft when pressed.
Tip: Air fryers run hotter than ovens and the brownies can catch on the top before the centre sets - use a lower temperature than you might expect (150°C rather than 170°C) and check from 18 mins. If the top is browning too quickly, cover loosely with a small piece of foil for the remainder of the cooking time.
Alternatives & Variations
Reduce the butter to 160g and replace the remaining 40g with the same weight of Greek yogurt - cuts the saturated fat noticeably while keeping the brownies moist and fudgy
Swap 80g of the caster sugar for light soft brown sugar and reduce the total to 240g - adds caramel depth and reduces the overall sweetness slightly
Use 85–90% dark chocolate instead of 70% - higher cocoa content means less sugar in the chocolate; the brownies will be more intensely bitter which suits some palates well
Cut into 20 smaller pieces rather than 16 - a natural portion control approach
Swap the plain flour for a gluten free plain flour blend - Doves Farm works well at the same quantity. The brownies are naturally low in flour so the substitution works particularly well here - the texture difference is minimal. Check your dark chocolate and cocoa powder labels if you have a severe intolerance, as some are produced in facilities that handle wheat. All other ingredients are naturally gluten free.
FAQs
Just 40 mins total - 15 mins of prep and 25 mins of baking. Factor in at least 1–2 hours of cooling time before cutting. The brownies are best eaten once fully cooled - warm brownies are delicious but won't cut cleanly.
Rated Easy. The brown butter step requires attention, and knowing when to pull the brownies from the oven takes a little confidence the first time - they look underdone but aren't. Everything else is straightforward mixing and baking.
Almost always because they were overbaked. The difference between fudgy and cakey brownies is a matter of minutes in the oven - and the eggs and sugar being whisked until pale and thick. Pull the brownies out while the centre still looks underdone and feels soft, and whisk the eggs and sugar thoroughly before folding in the chocolate. If in doubt, take them out earlier.
Yes - they freeze brilliantly. Cool completely, cut into squares, and freeze in an airtight container or zip-lock bag for up to 3 months. Defrost at room temperature for 1–2 hours - they come back to an almost identical texture to fresh. Individual squares can also be defrosted in the microwave for 20–30 seconds for a warm brownie at short notice.
Store in an airtight container at room temperature for up to 5 days. They actually improve after the first day as the texture settles and the chocolate flavour deepens. Don't refrigerate - it makes them hard and dry. For longer storage, freeze.
Three things: a high fat-to-flour ratio (lots of butter and chocolate, not much flour); whisking the eggs and sugar until pale and thick to create the papery top without adding structural lift; and pulling the brownies from the oven while they're still underdone in the centre. A cakey brownie has more flour, more raising agent, and is baked until a skewer comes out clean - the opposite of everything this recipe does.
Yes - the air fryer produces excellent brownies with a genuinely fudgy centre. Use a small tin that fits your basket, preheat to 150°C, and cook for 18–22 mins until the top is set and crinkled. Check from 18 mins and cover loosely with foil if the top is colouring too quickly. Cool completely in the tin before cutting - the same rules apply as the oven version.
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