I make this a couple times a month and Justin always tells me I should have made a bigger batch. Even my picky kids scarf it up. This is so easy to put together, especially since I just eyeball most of the ingredients.
Dijon Grilled Chicken Thighs
1 1/2 - 2 lbs boneless, skinless chicken thighs (I've used bone-in)
4 tsp minced garlic
1 tsp dried parsley
1 Tbsp salt
1 tsp pepper
1/3 cup dijon mustard
1/4 cup balsamic vinegar
1 Tbsp sugar
1/4 cup olive oil
1 1/2 tsp dried rosemary
Combine all ingredients except for chicken. Mix well. Pour over chicken (I use a ziplock bag) and let marinate for 1 hour or up to overnight. Remove chicken from marinade and grill until done (165 degrees - this takes us around 10-12 minutes).
from http://www.plainchicken.com/2011/08/dijon-grilled-chicken-thighs.html