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The perfect Christmas gift for you or a loved one
Cut the bananas into ½cm-thick slices on an angle, then arrange in a baking dish (ours was 22cm). Squeeze over the lemon juice, add the 2 tbsp brown sugar and lightly toss together to combine.
Weigh the remaining sugar and the butter, flour and oats into a bowl. Rub the butter into the dry ingredients using your fingertips, then drizzle in the syrup and add a pinch of salt. Mix everything together using a cutlery knife. Stir in the chocolate pieces, then scatter the crumble over the bananas in an even layer. Heat the oven to 200C/180C fan/gas 6.
Bake for 20 mins until golden and crunchy on top. Leave to cool slightly and serve warm with cream, custard or ice cream.