Peel, pit and cut peaches into 3/4-inch slices. You should have 5 to 6 cups. Combine the sugar and salt. Arrange a layer of peach slices in an 8-inch square baking pan and sprinkle with part of the sugar mixture; repeat layers until all the peaches and sugar are used. Sprinkle lemon juice over fruit.
In a bowl, combine flour and brown sugar; with a pastry blender cut in the butter until the size of peas. Mix in nuts. Sprinkle mixture evenly over the peaches. Bake in a 375 degree oven for 45 minutes or until top is crumbly and browned.
Spoon into individual dishes; top with whipped cream or ice cream, if you wish. Makes about 8 servings.