Put sliced cooking apples in a dish, scatter well with caster sugar and add a sprinkling of cinnamon. Rub 2 parts flour into 1 part butter, then mix in 1 part brown sugar and a handful of jumbo oats. Scatter over the fruit, then bake in a medium oven until the juices are bubbling through and the topping is golden.
Lighter bircher museli
Put 250g jumbo oats in a bowl with 300ml water, the juice of 1 lemon, 2-3tbsp greek yoghurt, 1 tbsp clear honey and a small handful of sultanas. Leave overnight, then stir in chopped apple and pear or other fruit.