|Combine flour, cocoa, baking powder, soda, salt and cinnamon. Set aside. Beat together butter and sugar to smooth. Add eggs 1 at a time. Beat well. Stir in vanilla, orange rind and zucchini. Alternately stir in dry ingredients and milk. Add nuts.|
Bake in greased and floured 10 inch tube pan or Bundt pan at 350 degrees about 1 hour till done. Cool in pan 15 minutes. Turn out. Drizzle with a powder sugar glaze.