INGREDIENTS
1 tbsp
plus 1 teaspoon whole-grain Dijon mustard, divided
1 tbsp
olive oil
1 tsp
chopped fresh rosemary
1/4 tsp
salt
1/4 tsp
black pepper
4
skinless, boneless chicken breast halves
Cooking spray
3 tbsp
light mayonnaise
1 tbsp
water
Rosemary sprigs (optional)