2 c. flour
1 c. sugar
1 c. dark brown sugar
3/4 c. cocoa (Hershey's unsweetened)
2 1/2 tsp. baking soda
2 eggs
1/4 lb. butter
1 c. Coke or 7-Up
1 c. boiling water

Mix all dry ingredients together. Add remaining ingredients. Mix well until blended (batter is runny). Bake at 350 degrees in long glass dish for about 25-30 minutes. When cool, sprinkle with powdered sugar.