Lemon meringue slice - tray bake

This is totally delicious if you leave it for a couple of days before eating.  It is one of those foods that tastes better with age.

4 ½ oz butter

3 oz castor sugar

3 yolks eggs

1/2 tsp baking powder

9 oz plain flour

4 oz lemon curd - I used my own home made lemon curd

3 egg white

7 oz castor sugar

Preheat oven to 170 C.

Beat butter and 3 oz of sugar until pale and creamy. 

Separate eggs and add yolks to the butter mixture and mix well. 

Sift flour and baking powder together, add and mix well. 

Press the mixture evenly into a lined 28 x 18cm slice pan.
Spread the base with lemon curd. 

Beat egg whites until stiff, add sugar and continue beating until it goes glossy. 

Spread meringue on top of the lemon curd.
Bake for 30 minutes or until meringue is coloured and firm.