Step 1

Crumble: Rub together all crumble ingredients.

Step 2

Press half into a pie plate.

Step 3

Filling: Blend cornflour, sugar and salt with a little milk.

Step 4

Heat remaining milk, then add to the cornflour mixture to make a custard, then cook until it thickens.

Step 5

Add rind, juice, butter and lastly lightly beaten eggs.

Step 6

Pour onto crumb crust and then sprinkle remaining half of crumble on top of the mixture.

Step 7

Bake 20 minutes at 180C or until set.