Polka Dot Cake
["1/3 c. shortening", "3/4 c. sugar", "2 1/4 c. sifted cake flour", "2/3 c. milk", "1 (6 oz.) pkg. chocolate chips*", "1 1/2 tsp. vanilla", "2 eggs", "3 tsp. double-acting baking powder", "1 tsp. salt"]
["*Reserve 1 1/2 tablespoons chips for garnishing."]
["shortening", "sugar", "cake flour", "milk", "chocolate chips", "vanilla", "eggs", "double-acting baking powder", "salt"]