Step 1

Preheat your oven to 180C fan / 200C.

Step 2

In a large bowl, rub together the cold butter and flour to create a breadcrumb consistency, then stir in the sugar, cinnamon and oats, if using.

Step 3

Peel and chop the apples into medium chunks. The smaller you chop them the less texture (more smooth) the apple mixture will have in the crumble, so feel free to chop them however you wish - depending on preference.

Step 4

Add butter and sugar to a saucepan or frying pan, allow them to melt and then stir together. Allow to cook for a minute or so, then add the chopped apples and cinnamon. Mix together and allow to slightly soften for about 5 minutes before removing from the heat.

Step 5

Place the apples in a medium oven proof dish (mine was 11in x 7in), evenly top with the crumble and bake for 25-30 minutes. Then serve with custard or vanilla ice cream... or both!