1.Mix together flour, cocoa, cinnamon, baking powder, baking soda and salt. Set aside dry ingredients.
Cream together butter, granulated sugar and brown sugar until light and fluffy. Mix in Nutella and vanilla extract. Mix in egg.
Add flour mixture and mix until just incorporated. Add chocolate chips.
Chill for at least 1 hour.
Drop tablespoons of dough 2 inches apart onto parchment lined baking sheets. Bake at 350 for about 11 minutes until the edges look set. Cool on baking sheet for 5 minutes then carefully remove to cooling racks.