Miraculous Microwave Chocolate Cake
["1/4 c. cocoa", "3/4 c. plus 2 Tbsp. flour", "1/2 tsp. baking soda", "1/4 tsp. salt", "1 egg", "2/3 c. water", "1 c. sugar", "1/4 tsp. baking powder", "1/4 c. plus 2 Tbsp. vegetable oil", "2 tsp. vanilla"]
["Cut out a circle of wax paper to fit bottom of 8-inch round plastic or glass pan, 1 1/2-inch deep. (I use square pan.) Cut another to make a collar to line sides to come up 1-inch higher."]
["cocoa", "flour", "baking soda", "salt", "egg", "water", "sugar", "baking powder", "vegetable oil", "vanilla"]