Preheat the oven to 350 F and melt butter in an 8x8 inch baking dish.

Now talk a medium-size bowl and mix ¾ cup sugar, flour, and 1 ½ tbsp cocoa in it. Then add vanilla and milk. Stir until smooth.

Spoon this batter over the baking dish with melted butter.

Mix sugar and ¼ cup cocoa powder and sprinkle it over the batter. Then pour boiling water over the top of the mixture slowly.

Now bake it in the oven for 30 minutes. When ready, serve with ice cream.