How to make apple slab pie

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How to make apple slab pie

by Great British Chefs18 August 2025
5.00

How to make apple slab pie

5.00

If you need to make pie for a crowd, then we highly recommend giving slab pies a go – they are super easy to make and transport, and all the components can be assembled in advance. Check out our guide below for more top tips and advice.

What is the difference between British and American apple pie?

It’s often said that the UK and the USA are two countries separated by a common language, and in this instance that language is pie. While in America pies are made with pie dough – a flaky dough that’s firmer than puff but flakier than shortcrust – and large chunks of firm apples. However, in the UK apple pie is often made with a mixture of cooking apples and dessert apples, the former turning into apple-scented fluff and the latter mostly keeping their shape. British pies are also often eaten with shortcrust pastry, quickly kneaded together with no folding or large pieces of butter.

What sort of apples should you use in an apple pie?

Different apples behave surprisingly differently once baked. Nicola Lamb and King Arthur Flour’s tests both show not only how much of a difference the variety of apple makes, as well as how much apples vary between the UK and the USA.

We’ve gone for a split between tart and sweet, soft and firm apples below, but if you like a softer filling, swap out some of the Granny Smiths for more cooking apples, or vice versa.

What sort of thickener can you use in apple pie?

You’ll see recipes using everything you can think of to thicken apple pie – flour, corn starch, tapioca starch, and sometimes even nothing at all. We’ve gone for cornstarch below, since it’s readily available. However, a similar amount of tapioca starch would also work well if you prefer a clearer, more gel-like texture.

How to make apple slab pie

This easy apple slab pie has a crumble topping (sometimes called a Dutch apple pie in the states) which makes it simple to assemble, with no fears about lattice tops or filling spilling.

For this recipe you'll need a deep 9 × 13 inch brownie tin (23 × 33 cm).

Serves 10-12

Ingredients

Metric

Imperial

  • 600g of shortcrust pastry

Apple filling

Crumble topping

1

Mix together all the ingredients for the apple filling and set aside in the fridge to macerate for 1 hour while you make the remaining components

2

Add the plain flour, rolled oats and Demerera sugar to a large bowl. Mix together, then add in the diced butter. Using your finger tips, rub the butter into the crumble mixture, reaching down into the bottom of the bowl as you go to make sure the butter is evenly mixed into the whole crumble mixture

3

Once the butter is evenly rubbed in, transfer the crumble to the fridge while you roll out the pastry

4

Dust a clean surface with flour, and then add your pastry. Lightly flour the top of the pastry

5

Roll the pastry out until it’s big enough to line your tin with about a centimetre of overhang, and ½ cm thick. Make sure to regularly pick it up and reflour the surface and the pastry as you roll, to prevent sticking

6

Fold the pastry into quarters, then carefully pick it up and transfer it to the centre of the tin. Unfold the pastry and gently press it into all the corners and up the sides of the tin, making sure there are no air gaps. Chill in the fridge until ready to bake

7

Preheat the oven to 180°C fan

8

Pour all the apples and their juice – the juice is critical, don’t discard it! – into the tin, and spread into an even layer

9

Cover with the crumble, making sure it’s spread evenly across the top of the pie

10

Bake the pie in the oven for 1 hour, or until the crust is golden and cooked through

11

Remove, and let cool at room temperature for at least 1 hour before serving

Can you make apple slab pie ahead of time?

All the components of this pie can be made in advance – the crumble will keep in a sealed container in the fridge for 2–3 days, and the apples will keep in the fridge for 24 hours, but might brown a little. The pastry can be kept refrigerated and covered for 3 days, unless it contains raw eggs, in which case it should be used within 2 days.

The whole baked pie will keep in the fridge for 3 days, and can be rewarmed in the oven before serving.

What should you serve with apple pie?

We love apple pie with single cream, custard, vanilla ice cream – all the classics! This pie isn’t too sweet, so something sweeter like vanilla ice cream or some slightly sweetened whipped cream would work well too.

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