Arrange half the apples in pastry-lined 9" pie pan.
Combine remaining ingredients except syrup; mix well. Spread half of mixture over apples. Repeat with remaining fruit and mixture.
Adjust top crust and flute edges; cut vents. Bake in moderate oven (350°) 35 minutes. Heat maple syrup to boiling; brush over pie and return to oven 15 minutes longer.