15min · 10 servings Dough: • 3/4 cup butter • 1/2 bar of unsweetened chocolate • 3/4 cup white sugar • 3/4 cup brown sugar (packed) • 2 tsp vanilla • 1 tbsp molasses (optional but recommended) • 1 tbsp corn syrup (optional but recommended) • 2 tsp espresso powder (optional but recommended) • 1 tsp baking powder • 1 1/4 cup all-purpose flour (do not pack flour) • 1/2 cup cocoa powder (I recommend using special dark cocoa powder) Frosting: • 1/2 cup butter • 1 1/2 cup marshmallow fluff • 3 1/2 cups powdered sugar • 2 tsp vanilla • 2/3 cup heavy cream (or 1 cup whipped cream) Chocolate Ganache: • 1/2 bar of chocolate (use left-over half from dough) • 1/2 cup semi-sweet chocolate chips • 1/2 cup milk chocolate chips • 2/3 cup heavy cream (or substitute with 1 cup