Granny'S Sugar Cookies
["1/2 c. butter or margarine (1 stick)", "1 c. sugar", "1 large egg", "2 to 2 1/4 c. all-purpose flour", "2 tsp. baking powder", "1/2 tsp. salt", "1/2 tsp. vanilla"]
["Cream together butter and sugar.", "Then blend in egg; add other ingredients to mixture.", "Chill 1 to 2 hours.", "Roll dough into 1/8 inch thickness.", "Place on cookie sheet and bake in preheated moderate oven at 375\u00b0 for 8 to 10 minutes.", "Makes approximately 2 dozen cookies about 2 inches in diameter."]
["butter", "sugar", "egg", "all-purpose", "baking powder", "salt", "vanilla"]