Brown Butter Apple Crumble

This Brown Butter Apple Crumble takes one of my favourite desserts and makes it even better. The topping is rich, nutty and beautifully golden, with a mixture of crisp, buttery clusters and delicate, tender crumbs. Underneath, soft, cinnamon-spiced Bramley apples provide the perfect contrast, balancing all that buttery sweetness with their distinctive tartness.

The secret is brown butter. Rather than rubbing cold butter into flour and sugar, I brown the butter first, then pour it over rolled oats before making the crumble. It’s a slightly different approach, but it gives the topping so much more flavour and a gorgeous texture. If you love a proper apple crumble, especially one served warm with plenty of custard, I think you’re going to love this version.

Why You’ll Love This Brown Butter Apple Crumble

• Rich, nutty brown butter. Browning the butter develops deep, toasted, almost caramel-like notes that make the crumble topping particularly delicious.
• The best combination of textures. The topping bakes into crisp, golden clusters with smaller, more delicate crumbs in between.
• Soft, cinnamon-spiced apples. Bramley apples break down beautifully as they cook, creating a tender filling with just enough tartness to balance the sweet topping.
• A simple twist on a classic. You don’t need any unusual ingredients or complicated techniques. It’s all about how you prepare the butter and topping.
• Perfect for serving warm. A generous spoonful of custard or a scoop of vanilla ice cream makes this an especially comforting dessert.

What Is Brown Butter and Why Use It in Apple Crumble?

Brown butter is simply butter that’s been cooked until the milk solids turn golden brown, developing a rich, toasted, almost caramel-like flavour. It sounds simple, but the difference it makes is remarkable. As butter heats, its water content begins to evaporate. Once enough moisture has cooked off, the milk solids start to brown. This is where those delicious nutty aromas come from.

In this Brown Butter Apple Crumble, those toasted flavours give the topping a depth you wouldn’t get from ordinary melted butter. They work particularly well with the golden caster sugar and rolled oats, creating a rich, buttery contrast to the tart apples underneath.

But it’s not just the flavour that makes this recipe different. Unlike a traditional crumble, where you rub cold butter into flour and sugar, this topping starts with liquid brown butter. The mixture is much wetter than a conventional crumble topping, but that’s intentional. As it bakes, it develops a lovely contrast between larger, crisp clusters and smaller, more delicate crumbs. It’s a simple change to a classic technique, but the results are delicious.

How to Make the Perfect Brown Butter Crumble Topping

Making the topping for this Brown Butter Apple Crumble is straightforward, but there are a few important details to get right. The most important are browning the butter properly, resisting the urge to add extra flour and creating those lovely irregular clusters. Here’s how it works:

• Brown the butter. Add the butter to a light-coloured saucepan over medium heat. Cook, stirring or swirling regularly, until it melts, foams and develops deep golden-brown milk solids. It should smell rich and nutty. Remove it from the heat as soon as it’s ready, as the milk solids can burn quite quickly.
• Pour the brown butter over the oats. Immediately pour the hot butter over the rolled oats, including all those delicious browned milk solids. Stir thoroughly until the oats are evenly coated.
• Leave the mixture to cool. Give the buttery oats 10 minutes to cool before adding the remaining ingredients.
• Add the flour and sugar. Whisk the plain flour and golden caster sugar together separately, then stir them into the brown butter and oats until evenly combined. The mixture will look very wet and buttery.
• Don’t add extra flour. It might seem like the mixture needs it, especially if you’re used to making crumble with cold butter. Trust the recipe here. The wet consistency is intentional.
• Create irregular crumbs and clusters. Use your fingertips to gently squeeze and break the mixture into pieces of different sizes. Scatter them over the apples as you go, rather than pressing the topping into a solid layer.

Those different-sized pieces are what give the finished crumble its lovely texture. The larger clusters provide crunch, while the smaller crumbs create a more delicate, buttery topping.

Why I Use Bramley Apples for Apple Crumble

For me, Bramley apples are the obvious choice for a classic apple crumble. They’re wonderfully tart, which is particularly important here because the brown butter topping is so rich.

Bramleys also soften considerably as they cook. Rather than staying firm and holding their shape like many eating apples, they break down into a beautifully tender filling. That soft texture works especially well beneath the crisp crumble topping. You get a lovely contrast between the buttery, golden surface and the warm, cinnamon-spiced apples underneath.

I keep the filling simple: Bramley apples, golden caster sugar and ground cinnamon. There’s no need for much else. The cinnamon brings a gentle warmth without overpowering the apples. Meanwhile, the sugar balances their natural acidity, allowing that distinctive Bramley flavour to come through.

For this Brown Butter Apple Crumble, I cut the apples into roughly 1cm-thick slices. This gives them enough substance when they go into the oven, while still allowing them to soften beautifully during baking. One important detail: the recipe calls for 600g of Bramley apples, weighed before peeling and coring. Keep that in mind when you’re preparing your ingredients.

My Tips for the Best Brown Butter Apple Crumble

• Use the right-sized baking dish. I use a 23cm round dish, which gives the apples and crumble a good balance of filling and topping. A significantly different dish size will change the depth of each layer.
• Spread the apples evenly. This helps them cook at a similar rate and gives you a consistent layer of fruit beneath the crumble.
• Don’t press down the topping. Scatter the crumbs and clusters loosely over the apples. Pressing everything together defeats the purpose of creating those different textures.
• Look for bubbling apple juices. A golden topping is important, but you also want to see the filling bubbling around the edges. That’s a useful sign that the apples have cooked and released their juices.
• Let the crumble stand before serving. Give it 15 minutes out of the oven. The filling will be extremely hot when it first comes out, and the short rest allows it to settle slightly before serving.

What to Serve with Brown Butter Apple Crumble

I love this Brown Butter Apple Crumble served warm, while the topping is still crisp and the apples are soft and fragrant.

• Vanilla custard. My favourite accompaniment to apple crumble. The smooth, creamy custard is delicious against the buttery topping and tart apples.
• Vanilla ice cream. A scoop melting into the warm crumble creates a lovely contrast between hot and cold.
• Double cream. If you prefer something less sweet, a generous pour of cold double cream works beautifully.
• Clotted cream. For something particularly indulgent, a spoonful of thick clotted cream is hard to beat.

More Recipes You’ll Love

If you love comforting apple desserts and buttery, golden crumble toppings, here are two more recipes to try.

• Almond Croissant Apple Crumble – Tart Bramley apples topped with a buttery crumble made with ground almonds and almond croissant. Think crisp, golden clusters with delicious pockets of toasted almond flavour.
• Christmas Crumble – A festive twist on classic apple crumble, with cranberry sauce, orange and warming Christmas spices. Perfect served warm with plenty of custard.