Old Fashioned Hot Fudge Cake

2 1 oz. envelopes unsweetened baking chocolate
1 1/2 c. buttermilk baking mix
1 c. milk
2 tsp. vanilla
1 cup sugar divided into 1/3 c and 2/3 c.
2 Tb. Cocoa
whipped cream or ice cream

About 45 minutes before serving, Preheat oven to 350 degrees.
In a large bowl mix chocolate, buttermilk baking mix, milk, vanilla extract and 2/3 c. sugar. Beat with a wire whisk until smooth. Pour batter into 12' x 8' baking dish.

In a small bowl mix cocoa, 1/3 c. sugar. Sprinkle over batter in baking dish carefully.

Pour 1 1/2 cup boiling water over all. DO NOT STIR.

Bake for 25 minutes. Serve immediately or sauce will absorb. Serve with ice cream or whipped cream.