Dip the turkey breast in Dijon mixture, being sure to coat both inside & outside well. Next coat both inside & outside with pistachio/bread crumb mixture. Lay breast on buttered foil; top half of the breast with the turkey stuffing. Fold other half on top to enclose the filling. If necessary, use some toothpicks to secure stuffed breast during roasting time. Cup sides of foil fairly close to meat.