1Mix all ingredients well and pour onto a 10x15 cookie sheet. Bake at 350 degrees for 20 minutes. Cool cake slightly. Then frost with either a cream cheese frosting (which is the best) or a regular powdered sugar frosting. Grandma used to make the sour cream frosting, which is 8 ounces sour cream softened and 1 stick oleo, softened. Blend well, then add some vanilla, like a Tablespoon or more, and enough powdered sugar to make a nice spreadable frosting. Grandma never used to measure the powdered sugar - she starts out with a couple cups then add. If it gets too thick you can use some milk to thin it down. Beat well and long and then frost your slightly cooled bars with this.