Preheat the oven to 180 C. Butter an 20cm x 25cm baking tray.
In a mixing bowl, combine the flour, oats, ground almonds or desiccated coconut, sugar, cinnamon, salt and butter
Rub the butter into the mixture until it’s a bit clumpy (get the kids involved!)
Combine the sliced pear, lemon juice and ginger in the baking tin and sprinkle the crumble topping over the pears.
Bake crumble until the pears are tender and the topping is golden brown, about 30 minutes.
Cool for 5 minutes before serving.