Pre heat your oven to 180C Fan/350F/Gas Mark 4
In a mixing bowl, stir the plain flour and light brown sugar together
Add the butter to the bowl in chunks or cubes, then using your fingers, rub it into the flour and sugar until it resembles breadcrumbs. You can also do this in a food processor if you prefer
Stir in the crushed Biscoff biscuits
Put the lemon juice in a bowl and as you peel and chop the apples, add them to the bowl and stir so they all get coated in the juice. This will prevent them browning quickly
Once all your apples are chopped and peeled, add the sugar, cornflour, cinnamon and mixed spice, and stir together
Add the apple mix to your baking dish and spread out into an even layer
Then add spoonfuls of the Biscoff spread dotted evenly over the apples
Pour the crumble mix on top, spread out into an even layer
Bake for 40 minutes, or until golden and bubbling
Serve immediately with custard, cream or ice cream
Once the apple crumble is fully cooled down, you can store in the fridge for up to 3 days, or freezer in portions