In 1994 I was diagnosed with celiac disease, which led me to create Celiac.com in 1995. I created this site for a single purpose: To help as many people as possible with celiac disease get diagnosed so they can begin to live happy, healthy gluten-free lives. Celiac.com was the first site on the Internet dedicated solely to celiac disease, and since then it has become an invaluable resource to people worldwide who seek information about celiac disease and the gluten-free diet. In medium bowl, combine flour, sugar, 2 teaspoons cocoa, baking powder and salt. Stir in milk, oil, and vanilla until smooth. Spread in an un-greased 9x9 square baking pan. Combine brown sugar and remaining cocoa. Sprinkle over batter. Pour hot water over all. Do not stir! Bake at 350F for 35-40 minutes. Great slightly warm, topped with Cool Whip or ice cream.