Grandma Kinney'S Plain Cake
["3/4 c. shortening", "1 1/2 c. sugar", "3 c. flour", "6 tsp. baking powder", "3/4 tsp. salt", "1 1/2 c. milk (a little at a time)", "1 1/2 tsp. vanilla"]
["Mix shortening and sugar.", "Add remaining ingredients.", "Makes 2 layers or a 9 x 13-inch cake.", "Bake at 350\u00b0 approximately 25 minutes or until toothpick comes out clean."]
["shortening", "sugar", "flour", "baking powder", "salt", "milk", "vanilla"]