Step 1

To make the lemon custard, combine custard powder, sugar, rind and enough milk to make a smooth paste in a saucepan.

Step 2

Stir in remaining milk over heat until mixture boils and thickens. Allow to cool.

Step 3

Make cake according to instructions on packet using eggs, water and butter.

Step 4

Line 2 x 12-hole patty pans with the paper patty cases.

Step 5

Spoon half the mixture into patty cases. Top each with 2 level tsp of lemon custard.

Step 6

Spoon over remaining cake mixture to cover custard.

Step 7

Cook at 180C for about 20 minutes, or until cooked through. Cool on a wire rack.

Step 8

Dust cakes with sifted icing sugar to decorate.