Roll the pie crust out on a flat surface, line a deep dish 9.5 inch pie pan, trim the excess.
In a blender or a food processor add the cream cheese, 2/3 cup sugar, salt, egg, 2/3 cup cream ale, vanilla, flour and 2 tablespoons cornstarch. Blend until smooth, pour into pie crust.
In a sauce pan over medium high heat, add the peaches, cornstarch, sugar, butter and cream ale. Simmer until thickened, about ten minutes.
Pour the peaches over the cream cheese.
Bake until the crust is golden brown and the edges of the filling has set but the center still jiggles when shaken, about 40 minutes.
Chill until set, about 4 hours.
Notes
This requires a very deep dish pie pan. 9 1/2 inches, 1.8 to 2 qt.
If you use a small pie pan you will have far too much filling.