Step 1

Preheat oven to 180C. Grease and line the base and sides of a 20 x 30cm lamington pan with baking paper, allowing the 2 long sides to overhang.

Step 2

Place the flour, icing sugar and butter in the bowl of a food processor and process until mixture resembles fine breadcrumbs. Spoon into the prepared pan and press mixture evenly over the base with the back of a spoon.

Step 3

Bake in preheated oven for 15 minutes or until lightly golden.

Step 4

Meanwhile, whisk the eggs, sugar, lemon rind and juice, baking powder and three-quarters of the coconut in a large bowl until well combined. Pour over the base and sprinkle evenly with remaining coconut. Bake in oven for a further 20 minutes or until golden brown and just set. Remove from oven and set aside in pan to cool completely. Cut into squares to serve.