2. In a large bowl add 3/4 cup melted butter, 1 1/4 cup sugar and two eggs. Whisk together until well blended. Add half of the cocoa mix to the egg mixture and mix well. Add the remaining cocoa powder and whisk until combined.
1. In a large bowl beat 1 cup of softened unsalted butter with a hand-mixer until light and fluffy. It will turn whiter than it started. Add in 2 eggs, 1 tsp vanilla, 2/3 cup sugar and 2/3 cup brown sugar. Beat with the hand-mixer until combined.
3. Bake for 45-50 minutes or until a toothpick inserted into the centre comes out smooth. This is a thick treat so give it a little jiggle and make sure the centre is set before removing from the oven. If the cookie top begins to brown too much place aluminum foil over top to keep the cookie top from over-browning.