To make a tom kerridges apple and pear crumble with proper custard recipe, first you need to prepare your ingredients. Peel and slice your apples. Cut your pears into quarters. Place the apples, peeled and quartered, in the bottom of an oven-proof dish. Pour the melted butter over the apple mixture. Add the sugar and stir to combine. Bake for 30 minutes. Remove the dish from the oven and allow to cool for 10 minutes before serving.