Raspberry Walnut Slice

Ingredients:
2 ozs margarine/ butter
2 ozs sugar
1 egg
3 ozs flour
raspberry jam / strawberry jam
3 ozs castor sugar
2 ozs chopped walnuts
Method:
Cream together 2 ozs margarine / butter and 2 ozs sugar. Add the yolk of one egg and 3 ozs flour, making a stiff dough. Roll this out on a floured board to fit a greased 10" X 8" tray. Bake in hot oven for ten minutes.
Remove from oven and when slightly cool spread a thin layer of raspberry jam / strawberry jam. Whisk the egg white stiffly with 3 ozs castor sugar. Spread over the jam and top with 2 ozs. of chopped walnuts.
Bake in moderate oven for 15 mins. Serve when cold cut into slices / pieces.