Dust with sifted icing sugar and serve with ice-cream, cream or custard, if desired. Crumble Topping suitable to freeze. Not suitable to microwave. Combine cream, one cup brown sugar and butter in a medium saucepan and cook, stirring, over a low heat, until butter is melted. Simmer, uncovered, stirring occasionally, for about 10 minutes or until caramel sauce is thickened slightly.
Place pears over sauce in dish.
Add eggs, one at a time and beat until combined. Stir in sifted flour and combined buttermilk and reserved caramel sauce in two batches. Spread mixture over pears. Bake in moderate oven for about 1 hour or until browned and firm. Serve sprinkled with cinnamon sugar.