In a large bowl with a hand mixer combined flour, cocoa, sugar, baking powder, baking soda, and salt. Add in eggs one in at a time beat until well mixed then add in butter and combined. Add buttermilk and beat until smooth about 2-3min. Then add in cookies and beat until incorporated. Pour batter evenly into floured baking pans. Cook about 30-35min or until a toothpick comes out of the middle clean.
Cool in pans for 5 minutes only. Then finish cooling completely out of pans on cooling rack bfore fosting. Look for the Cookies and cream cheese icing recipe!!! yum!