Hot Fudge Sundae Cake
["1 c. flour", "3/4 c. sugar", "2 Tbsp. cocoa", "2 tsp. baking powder", "1/4 tsp. salt", "1/2 c. milk", "2 Tbsp. vegetable oil", "1 tsp. vanilla", "1 c. chopped nuts (optional)", "1 c. packed brown sugar", "1/4 c. cocoa", "1 3/4 c. hottest tap water"]
["Heat oven to 350\u00b0.", "Mix flour, sugar, 2 tablespoons cocoa, baking powder and salt in ungreased 9 x 9 x 2-inch baking pan. Mix in milk, oil and vanilla with fork until smooth.", "Stir in nuts.", "Spread in pan.", "Sprinkle with brown sugar and 1/4 cup cocoa.", "Pour hot water over batter.", "Bake for 40 minutes.", "While warm, spoon into dessert dishes; top with ice cream.", "Spoon sauce from pan onto each serving.", "Makes 9 servings."]
["flour", "sugar", "cocoa", "baking powder", "salt", "milk", "vegetable oil", "vanilla", "nuts", "brown sugar", "cocoa", "water"]