In bowl, combine the flour and salt. Cut in the shortening until resembles course crumbs. Whisk egg and water together; sprinkle on the flour mix and toss. Form dough into a ball, roll out to a 9x13 rectangle. Place in an ungreased 9x13 pan.
For filling; combine the flour and sugar, toss with the peaches. Pour into the crust. Pour the cream over the top and sprinkle with the cinnamon (I prefer nutmeg).
Bake at 425º for 20 minutes. Reduce the temp to 350º and bake 25 minutes longer. Let stand 25 minutes before serving. Refrigerate any leftovers