Hot Water Sponge Cake
["3 eggs", "1 c. sugar", "4 Tbsp. hot water", "1 c. self-rising flour", "1 tsp. baking powder", "1 tsp. vanilla"]
["Mix eggs, sugar and hot water all together until foamy. Add remaining ingredients and mix well. Cook in 13 x 9-inch pan or muffin tins. Bake 15 minutes at 315\u00b0."]
["eggs", "sugar", "water", "flour", "baking powder", "vanilla"]