Lemon Brownies
["3/4 c. butter, at room temperature", "1/3 c. powdered sugar", "1 1/2 c. flour"]
["Cream together by hand.", "Put in a 9 x 12-inch pan.", "Bake at 350\u00b0 for 20 minutes.", "Do not overcook."]
["butter", "powdered sugar", "flour"]