Butter Cookies
["2 cups flour", "1 tsp. baking powder", "2/3 cup unsalted butter, softened", "1/2 cup sugar", "1 tsp. salt", "1 egg", "1 Tbsp. milk", "1 tsp. vanilla"]
["Sift the flour, baking powder, and salt together into a bowl. Set aside."]
["flour", "baking powder", "unsalted butter", "sugar", "salt", "egg", "milk", "vanilla"]