Heat oven to 350 degrees.
Spray a shallow 8 x 8 inch baking dish with non-stick cooking spray.
Place apples in the dish.
Sprinkle apples with a mixture of water, cinnamon and salt.
Work together the sugar, flour and butter until crumbly.
Sprinkle crumb mixture over apples and bake uncovered for 40 minutes.
Serve warm plain or with vanilla ice cream.