This blackberry and apple crumble takes 15 minutes to prepare and about 40 minutes in the oven, and it's the pudding I make more than any other once the hedgerows start turning black in late August. Sharp Bramley apple and juicy blackberries under a buttery, oat-heavy crumble topping — it's simple, it's forgiving, and it uses up whatever you've picked that weekend.
Ingredients
You need two things: a sharp fruit filling and a buttery topping. Here's exactly what goes into each.
For the fruit filling
- 400g blackberries (fresh or frozen)
- 2 large Bramley apples, peeled, cored and cut into 2cm chunks (about 400g prepared weight)
- 100g caster sugar (more or less depending on how sharp your blackberries are)
- 1 tbsp plain flour, to thicken the juices
- Juice of half a lemon
For the crumble topping
- 150g plain flour
- 100g cold butter, cubed
- 75g soft brown sugar
- 50g rolled oats
- A pinch of salt
Method
Heat the oven to 180C (160C fan) and get a 1.5-litre baking dish ready. This makes enough for six generous portions.
- Toss the blackberries and apple chunks into the baking dish with the sugar, flour and lemon juice. Give it a good stir so everything's coated, then spread it out level. The flour catches the juice as it cooks so you don't end up with a soup.
- Make the topping. Rub the cold butter into the flour and salt with your fingertips until it looks like coarse breadcrumbs — don't overwork it, a few larger lumps are fine and actually give you better texture. Stir in the brown sugar and oats.
- Scatter the topping evenly over the fruit. Don't press it down — a loose, open layer bakes up crunchier than one that's been compacted.
- Bake for 35–40 minutes, until the topping is deep golden brown and you can see the fruit bubbling up at the edges. That bubbling is your cue that the apple's cooked through and the juices have thickened.
- Let it sit for 5–10 minutes before serving — the filling is molten straight out of the oven and needs a moment to settle.
What to serve it with
Custard is the traditional match and I won't argue with it — hot, thick, poured straight over the crumble while it's still steaming. Vanilla ice cream is the other obvious choice, especially if you like the contrast of hot fruit against cold cream. A spoonful of clotted cream or plain double cream works too if you want something less sweet than custard but richer than ice cream.
Can you use frozen blackberries?
Yes, and there's no need to thaw them first. Tip them into the dish frozen, straight from the bag, mixed in with the apple, sugar, flour and lemon juice as normal. Because they start colder, add an extra 5–10 minutes to the baking time and check the fruit is bubbling right through the centre of the dish, not just around the edges, before you take it out. Frozen blackberries also tend to release a bit more liquid than fresh, so the extra tablespoon of flour earns its keep here.
Make-ahead tips and storage
You can assemble the whole thing up to a day ahead and keep it in the fridge unbaked, covered with cling film — just bake it straight from the fridge and add 5 minutes to the time since it's starting cold. The crumble topping also freezes well on its own: make a double batch, freeze half in a bag, and you've got a topping ready to scatter over any fruit the next time you want a crumble in a hurry.
Once baked, leftovers keep in the fridge for up to 3 days — cover once it's cooled. Reheat individual portions in the microwave for a minute or so, or warm the whole dish in a 160C oven for 15–20 minutes until hot through. It also freezes well after baking: cool completely, cover tightly, and freeze for up to 3 months. Defrost overnight in the fridge, then reheat in the oven to crisp the topping back up.
Frequently Asked Questions
Can I use a different apple instead of Bramley?
You can, but Bramleys are worth seeking out because they break down into a soft, sharp puree that balances the sweetness of the blackberries. If you can't get Bramleys, use a firmer eating apple like Braeburn or Granny Smith and expect the filling to hold its shape more, with less of that classic sharp-sweet contrast.
Why is my crumble topping soggy instead of crunchy?
Soggy topping usually means too much liquid escaping from the fruit and soaking upward, or butter that was too soft when you rubbed it in. Keep your butter properly cold straight from the fridge, don't skip the tablespoon of flour in the fruit mix, and make sure you're baking at a high enough heat — 180C — for the topping to crisp before the juices can soak through it.
Do I need to peel the apples?
Yes, for this recipe — Bramley skins turn tough and papery when cooked and it's not pleasant to eat around them in a soft crumble filling. Peel them properly with a vegetable peeler before you chop.
Can I make this crumble gluten-free?
Yes, swap the plain flour in both the filling and the topping for a gluten-free plain flour blend, and double-check your oats are certified gluten-free oats if that matters for you — ordinary oats are often cross-contaminated with wheat during processing.
If you're growing your own, my guide to growing thornless blackberry varieties covers which types crop heaviest for a British garden.
