My Ultimate Blackberry and Apple Crumble
There is perhaps no greater signal that autumn has arrived than a bubbling, golden fruit crumble. This recipe for blackberry and apple is a true British classic, and I will show you how to get it right.
There are some recipes so deeply embedded in our culinary heritage that they feel like part of the fabric of home life, and a fruit crumble is certainly one of them. The combination of tart cooking apples, mellowed by the deep, winey notes of late-summer blackberries, is a partnership made in heaven. It’s a pudding for all seasons, but it truly comes into its own as the evenings begin to draw in, offering a bowl of pure, unadulterated comfort.
However, a good crumble is a tale of two textures: the soft, yielding fruit base and the crunchy, biscuity rubble of the topping. So often, the topping can be a disappointment – either too stodgy, too floury, or sadly soggy. The secret, as is so often the case in cooking, lies in the right ingredients and a little bit of technique, which is actually very simple once you know how.
This recipe is the one I have relied upon for years. It is straightforward, dependable, and produces a truly first-class crumble that will have everyone reaching for the custard jug. We will use classic Bramley apples for their magnificent ability to cook down to a soft fluff, and a simple, traditional crumble topping that bakes to a perfect golden crunch. It is, in my opinion, the only blackberry and apple crumble recipe you will ever need.
Why You'll Love This Recipe
- Using cold, cubed butter is essential. Rubbing it in with your fingertips creates light, sandy breadcrumbs, which is the foundation for a crunchy, not claggy, topping.
- Bramley apples are the perfect choice. Their high acidity and lower water content mean they break down into a beautiful, fluffy purée that perfectly complements the whole blackberries.
- A generous layer of demerara sugar on top is not just for show. It caramelises during baking, creating an irresistibly crisp and flavourful crust.
- We do not press the crumble topping down. Scattering it loosely allows steam from the cooking fruit to escape, preventing the underside of the topping from becoming soggy.
Ingredients
- For the fruit filling:
- 900g Bramley cooking apples
- 225g fresh or frozen blackberries
- 50g golden caster sugar
- 1 tbsp water
- For the crumble topping:
- 175g plain flour
- 110g unsalted butter, cold and cut into small cubes
- 50g golden caster sugar
- 50g demerara sugar, for sprinkling
Equipment Needed
1.5 litre shallow ovenproof dish · Large mixing bowl · Baking tray · Apple corer and peeler · Kitchen scales
Step-by-Step Instructions
- First, pre-heat your oven to 200°C (180°C Fan, Gas Mark 6). Select a shallow ovenproof dish, about 1.5 litres in capacity.
- Now, prepare the fruit. Peel, core, and slice the apples into chunky, even-sized pieces – about 1-2cm thick. Place them in the ovenproof dish along with the tablespoon of water.
- Scatter the blackberries over the apples, followed by the 50g of golden caster sugar. Give the dish a gentle shake to distribute everything evenly.
- To make the crumble topping, place the flour in a large, cool mixing bowl. Add the cubes of cold butter.
- Using just your fingertips, begin to rub the butter into the flour. Lift the mixture as you work to incorporate air. Continue until it resembles coarse breadcrumbs with a few larger, pea-sized lumps of butter remaining. This texture is what gives the crumble its crunch.
- Stir the 50g of golden caster sugar into the flour and butter mixture with a fork.
- Now, scatter the crumble topping evenly and loosely over the fruit. It is very important that you do not press it down. The loose texture is key to a crisp result.
- Finally, sprinkle the demerara sugar all over the surface. This will create a lovely caramelised crust as it bakes.
- Place the dish on a baking tray (to catch any bubbling juices) and bake on the middle shelf of the pre-heated oven for 40-45 minutes.
- The crumble is ready when the topping is golden brown and crisp, and you can see the fruit juices bubbling up around the edges. Allow it to stand for 10 minutes before serving, as the filling will be incredibly hot.
Delia's Notes from the Kitchen
The real secret to a superior crumble lies in texture. Don't be afraid of leaving a few larger, lumpy bits of butter in your crumble mix when you're rubbing it in. These will melt during baking and create little pockets of richness and crunch that are simply divine. It's these small imperfections that lead to a perfect result.
How to Store & Reheat
Store any leftovers, once completely cool, covered in the fridge for up to 3 days. To reheat, place the dish in an oven pre-heated to 180°C (160°C Fan) for 15-20 minutes, or until the topping has re-crisped and the fruit is hot. I would advise against using a microwave, as it will make the topping soft.
Frequently Asked Questions
Can I use frozen blackberries?
Yes, absolutely. There is no need to defrost them first; simply add them to the dish straight from the freezer. You may need to add an extra 5-10 minutes to the cooking time.
Why is my crumble topping soggy?
A soggy topping is almost always caused by trapped steam. Ensure you scatter the crumble mixture very loosely over the fruit and never, ever press it down. This allows the steam to escape and the topping to bake properly.
Can I prepare this crumble ahead of time?
You can. You can assemble the entire crumble and keep it, covered, in the fridge for up to 24 hours before baking. You may need to add about 10 minutes to the baking time as it will be cooking from cold.
My fruit filling is too watery. What can I do?
Bramley apples shouldn't produce too much water, but if you are using a different variety or your fruit seems very juicy, you can toss the fruit with a teaspoon of cornflour along with the sugar. This will help to thicken the juices as they cook.
Can I make the crumble topping in a food processor?
You can, but you must be very careful. Use the pulse button in short bursts until the mixture resembles breadcrumbs. It is very easy to over-process the mixture, which will result in a tough, paste-like topping rather than a light, crumbly one. For the best results, I always recommend using your fingertips.