Preheat oven to 200 deg C.
Combine all the dry ingredients (flour, sugar, cocoa, cinnamon, baking soda and salt). Add the buttermilk, oil and vanilla and stir till combined. Stir in the chocolate chips and/or nuts.
And you can taste the batter because there are NO EGGS!
Divide the batter equally (or as equally as possible) between greased muffin cups (if you''re using a non-stick pan, you don''t need to grease it).
Bake for 25-30 minutes.