Herb Dijon Chicken Thighs with Sweet Potatoes

This is a perfect weeknight dish. It's all cooks together in one pan, makes minimal dishes, and tastes delicious! I've experimented with a few types of mustards for this recipe from Eating Well. So far, a mix of whole grain mustard and Dijon is my favorite. I substituted shallots for the red onions. You could use pretty much any root vegetable if you'd prefer to mix it up with something like celery root or parsnips.