Cover zucchini with boiling water and let stand for 5 minutes. Drain well. Put dried zucchini into unbaked pie shell. I like Pillsbury because it comes in sheets to easily make a shell and crust.
In bowl, combine remaining ingredients, except butter and then mix well. Pour over zucchini. Top with slices of butter. Put on top crust and seal edges. Cut vent holes.
Bake at 425 degrees for 10 minutes, then lower oven temperature to 325 degrees and continue to bake for one hour.