Preheat oven to 325. Roll cookies between two sheets of wax paper to make fine crumbs (can freeze cookies a few minutes for easy rolling). Beat egg whites and salt until stiff and glossy. Fold in crumbs; nuts and vanilla. Spread in buttered 8 inch pie plate. Bake for 35 minutes. Cool and refrigerate 3 hours. Cover w/whipped cream and shaved chocolate. Denise Bradshaw