Chocolate Pudding Cake
["2 c. flour", "4 tsp. baking powder", "3/4 tsp. salt", "1 1/2 c. sugar", "4 Tbsp. cocoa", "1 c. milk", "2 tsp. vanilla", "1 1/2 c. pecans, chopped", "4 Tbsp. butter, melted", "1 1/2 c. light brown sugar", "1/2 c. cocoa", "3 1/2 c. hot water"]
["The last 3 ingredients are to be mixed and sprinkled over batter."]
["flour", "baking powder", "salt", "sugar", "cocoa", "milk", "vanilla", "pecans", "butter", "light brown sugar", "cocoa", "water"]