Cream together the butter or margarine
and sugar until pale and fluffy. Gradually beat in the eggs, one at a
time, then stir in the vanilla essence. Mix together the flour, nuts,
cocoa, cinnamon and baking powder, then fold into the mixture and mix
to a soft dough. Roll out the dough on a lightly floured surface to a
20 cm/8 in round and press gently into a greased loose-bottomed cake
tin (pan).
Spoon the cherries on top. Bake in a
preheated oven at 200ºC/400ºF/gas mark 6 for 30 minutes until springy to
the touch. Remove from the tin to cool, then dust with icing sugar
before serving.