Peanut Butter Cake
["1/4 c. peanut butter", "1/4 c. margarine", "1 1/2 c. sugar", "2 eggs", "1 c. skim milk", "2 1/4 c. flour", "4 tsp. baking powder", "1 tsp. vanilla"]
["Cream", "sugar and shortening;", "add eggs.", "Sift flour and baking powder", "and", "add alternately with milk to creamed mixture.", "Add peanut", "butter and vanilla.", "Bake in two layers at 350\u00b0 about 25 minutes.", "Test with a toothpick."]
["peanut butter", "margarine", "sugar", "eggs", "milk", "flour", "baking powder", "vanilla"]