Apple And Plum Crumble Recipe Apple and Plum Crumble 500 grams apple/ 500g Sliced plums 1 cup castor sugar 1/4 cup orange juice 125 g butter 2.25 cups of flour 1 orange rind grated. 1/2 cup almond flakes. Mix apple plum, 1/2 sugar and orange juice. Mix butter flour etc. Combine and bake at 195C/375F for 35 minutes