Step 1

Preheat oven to 350F/180C.

Step 2

To make the apple filling: In a small bowl, toss apples with sugar and cinnamon. Divide apples into 2 individual ramekins, and press them slightly. Set aside.

Step 3

To make the topping: Mix flour and sugar, then add melted butter. Mix with a fork, until mixture clumps together into crumbly balls. Mix in oats and nuts, if using. Sprinkle crumble evenly on top of the apple mixture.

Step 4

Bake for about 30 minutes, until topping is golden brown and apples are tender. Serve warm and top with ice cream if you want (how can you not want?).