Pan Handy Pudding Cake
["3 c. flour", "2 c. sugar", "1/3 c. plus 1 Tbsp. cocoa", "2 tsp. soda", "1 tsp. salt", "2 Tbsp. vinegar", "2 Tbsp. vanilla", "2/3 c. plus 2 Tbsp. oil", "2 c. cold water"]
["Mix the first 5 ingredients in a bowl.", "Make a hole in the center.", "Add the vinegar, vanilla, oil and water.", "Mix well and pour into a 9 x 13-inch pan.", "Bake at 350\u00b0 for 35 to 40 minutes."]
["flour", "sugar", "cocoa", "soda", "salt", "vinegar", "vanilla", "oil", "cold water"]