Apple Crumble Ingredients 1 jar of Colmans Apple Sauce. Packet of biscuits of your choice, like Lincoln or Hobnobs etc. You could use Ginger biscuits or you could use an assortment of different brands depending on your taste. 1 packet of Birds Whisk and Serve custard or tin of custard. Method 1 Empty jar of Colmans apple sauce into a small microwave dish. 2 Put biscuits into a polythene plastic bag and crush them with a rolling pin or wooden spoon or something similar until biscuits are like crumbs. 3 Pour biscuit crumbs onto the apple sauce. 4 Place the apple sauce with biscuit crumbs into microwave for 1 to 2 minutes. 5 Make the Whisk and Serve custard with boiling water or heat the tin of custard. 6 Pour the custard on the apple crumble, then eat and enjoy. Vanessa