Preheat oven to 350°F. Chop butter into pieces and place in a 9x13-inch baking dish while the oven preheats and allow it to melt. Remove dish once butter is melted (don’t let butter burn).

Batter: In a medium bowl, stir together flour, baking powder, salt, 1/2 cup brown sugar, 1/2 cup granulated sugar, 2 Tablespoons cocoa powder and the chocolate chips. Stir in milk and vanilla. Batter will be thick. Spread batter evenly over melted butter in baking dish.

Topping: In a small bowl, stir together 1/2 cup cocoa powder, 1/2 cup granulated sugar and remaining 1/4 cup brown sugar. Sprinkle evenly over the batter (do not stir).

Slowly pour hot coffee or boiling water over the topping (do not stir).

Bake 30–35 minutes, until top looks crisp and set. Allow to cool for a few minutes before serving.

Serve: Scoop warm cobbler into bowls and serve with a scoop of vanilla ice cream.