4 chicken breast halves, skinned and boned
1/2 c. mayonnaise or salad dressing
2 tbsp. Dijon mustard
1-2 tbsp. soy sauce
1/2 tsp. onion powder (may use garlic powder)

Mix together mayonnaise, mustard, soy sauce and onion powder. Coat chicken breasts well and marinate for 20-30 minutes. Place chicken on greased grill or rack of broiler pan. Grill or broil about 10 minutes on each side until tender, brushing frequently with marinade mixture. This marinade is also excellent on pork chops.