1 cup flour
3/4 cup granulated sugar
1/2 cup cocoa (preferably Dutch-process)
2 tsp baking powder
1/4 tsp salt
1/2 cup milk
1/4 cup butter, melted
1 tsp vanilla extract
3/4 cup brown sugar
1/2 cup walnuts, chopped
1 1/2 cups hot water
Preheat the oven to 350 F. Butter a 9-inch cake pan or eight 3-inch ovenproof cups or ramekins.
Combine the flour, sugar, 1/4 cup of the cocoa, baking powder and salt in medium bowl. Mix thoroughly with a wooden spoon. Add the milk, melted butter and vanilla and stir well. Pour the batter into the prepared pan or cups.
Mix together the brown sugar, walnuts and remaining 1/4 cup cocoa. Sprinkle over the batter. Carefully pour hot water over top. Do not stir. Bake for 30 to 45 minutes for a 9-inch pan, 15 to 20 minutes for cups. Serve warm.
Source: Wanda's Pie in the Sky, 2002