Bake cake as directed on package in a 10" tube pan.

Let cool.

Cook lemon filling as directed and cool (but not set)

Slice cake into three layers.

Take 1/2 filling and put between the 2 layers.

Whip the cream and fold into remaining lemon filling.

Spread over top and sides of cake.

Sprinkle edge with grated chocolate.

Let set in frig. for a day.