Combine 1 cup flour, 1/2 cup sugar, salt and cinnamon. Cut in butter with 2 knives until coarse (resembling corn meal). Combine peaches, lemon juice, lemon peel, 1/2 cup sugar and 1/4 cup flour. Spoon into greased 9" square dish. Sprinkle flour mixture over peaches. Bake covered for 15 mins. Remove cover and bake 35 to 45 min. Longer.
