Bring butter and water to a boil and remove from heat.
In decent sized mixing bowl, mix all the dry ingredients.Add the water/butter mix to the dry, beating on medium speed, add the 1/2 c. milk, then the eggs, and mix till smooth.(may have a few very tiny lumps)pour into a greased and floured jellyroll pan and bake at 400 degrees for 20 minutes.
While brownies are still hot, mix the first 3 items for the topping in a pan over medium heat, bring to boil and remove from heat.Stir in the chocolate chips till smooth and spread over hot brownies. :)