Preheat the oven to 350 degrees F. Stir the ingredients for the pear filling together in a bowl until well combined. Transfer the filling mixture to a small casserole dish.
Stir the ingredients for the crumble topping together in the same bowl you used for the pear topping. Evenly spread it over the pears and bake in the oven 30 minutes, until the topping is golden brown and the pears have softened.
Serve pear crumble with choice of ice cream or whipped cream.