Preheat oven to 350°
In a medium mixing bowl, beat softened butter and sugars together until creamy.
Add eggs, vanilla and corn syrup. Beat on medium speed until combined.
In another medium mixing bowl, whisk flour, cocoa powder, graham cracker crumbs, baking soda and salt together.
Gradually beat dry ingredients into wet ingredients over low/medium speed just until incorporated.
Stir in morsels mix and coarsely broken graham cracker pieces.
Drop by 1" cookie scoop or rounded teaspoon on an ungreased cookie sheet and bake for 9-11 minutes.
Remove cookies from oven and place on a wire rack to cool completely
Slighty adapted from Nestle®