Preheat oven to 350 degrees. Trim any fat or tendons from chicken breasts, then pat them dry using absorbent paper towels; set aside. Place the egg and milk mixture in a bowl. In a separate bowl, toss together the ground pumpkin seeds, salt, and dryBrown Mustard Basil Bread Dipping Mix, blending well. Dip the chicken breasts first in the egg wash, then dredge them in the pumpkin seed mixture, coating well and shaking off all excess nuts. Place the breasts in a single layer in a baking dish. Bake in preheated oven for 35 to 45 minutes, or until chicken is cooked through.
While chicken is cooking make the sauce. Combine Garlic & Chile Mustard, chicken stock, and whipping cream in a heavy-bottomed 2-quart saucepan over medium heat. Bring to a boil, then reduce heat and simmer for 20 minutes. Just before serving, bring the sauce back to a boil; whisk the cornstarch mixture to blend well, then add to the sauce, whisking until thickened. Lower heat and keep warm until ready to serve. To serve, place a chicken breast on each serving plate and spoon a portion of the sauce over each one. Serve hot.