Lemon Squares
["1 c. plain flour", "1/2 c. soft butter", "1 c. sugar", "1/4 c. powdered sugar", "2 eggs", "2 tsp. grated lemon peel (optional)", "1/2 tsp. baking powder", "2 Tbsp. lemon juice", "1/4 tsp. salt"]
["Preheat oven to 350\u00b0.", "Mix flour, butter, powdered sugar and press into ungreased 9 x 9 or 8 x 8-inch pan.", "Bake 20 minutes. Beat remaining ingredients until light and fluffy, 2 to 3 minutes. Pour over crust and bake for 25 minutes.", "Let cool and sprinkle with powdered sugar and cut into squares."]
["flour", "butter", "sugar", "powdered sugar", "eggs", "lemon peel", "baking powder", "lemon juice", "salt"]