Preheat the Oven to 350°F (175°C).Grease a 9x13 inch baking dish
Mix Flour, Sugar, Baking Soda, Vanilla Extract, Cocoa Powder, Creamy Salad Dressing, and Water in a Large Bowl Pour the Batter into the Greased Baking Dish
Bake in the Preheated Oven until a Toothpick Inserted into the Center Comes Out Clean (About 30 Minutes)-Cool in the Pans for 10 Minutes before Removing to Cool Completely on a Wire Rack