In a large bowl, mix flour, baking soda, and baking powder. Layer ingredients in a quart jar starting with flour mixture, cocoa powder, sugar, brown sugar, chocolate chips, and walnuts
Preheat oven to 350 degrees F. In a bowl whisk together flour, cocoa powder, baking soda, and baking powder
In another bowl with an electric mixer cream butter, and sugar until light and fluffy
Beat in eggs, 1 at a time, beating well after each addition. Beat in flour mixture and stir in chocolate chips
Drop dough by level tablespoonfuls 2 inches apart onto buttered baking sheets and bake cookies in batches in the middle of oven for 15 minutes
