Preheat your oven to 450ºF.
Then, mix together 1/2 cup of dijon mustard,
1/4 cup of maple syrup,and 1 tablespoon of rice wine vinegar.
You can also add honey.
Or use honey instead of maple syrup.
Put a 1.5 pound package of chicken thighs into an baking dish.
Then, salt and pepper the thighs.
Pour your maple mustard mixture over them
turning the thighs in the mixture so they are fully coated.
Put the chicken thighs into the oven,
and let them bake for 40 minutes.
Baste the tops of the chicken with more sauce half way through.
Let the chicken rest for 5 minutes before serving.
Plate the chicken, making sure to spoon some extra sauce over the top.
Sprinkle over some fresh rosemary.