1.Preheat oven to 180°C/350°F. Grease 20cm x 30cm (8 inch x 12 inch) rectangular pan; line base and long sides with baking paper, extending paper 5cm over sides.
2.Beat butter, sugar and egg in small bowl with electric mixer until light and fluffy. Transfer to medium bowl; stir in sifted flours and custard powder. Spread dough into pan; spread with jam.
3.To make coconut topping, place ingredients in medium bowl; stir to combine; sprinkle over jam.
4.Bake slice about 40 minutes; cool in pan.
Related
Sign up for our newsletter
Want 20% off at THE ICONIC? Sign up to the latest news at Women’s Weekly Food.