Put the flour in a bowl. Add the
margarine and rub in with the fingertips until the mixture resembles
breadcrumbs. Stir in half the sugar. Mix the almonds with the plums,
apples and orange rind and juice. Stir in the remaining sugar. Turn
into a 1.2 liter/ 2 pt/5 cup ovenproof dish. Sprinkle the crumble over
and press down lightly. Bake in a preheated oven at 190°C/ 375°F/gas
mark 5 for about 45 minutes until golden brown and cooked through.
Serve hot with Classic Custard Sauce.