Braised Chicken Legs in Mustard Sauce

3 Tbs. Olive Oil
12 chicken legs
1/2 cup finely chopped onion
1/2 cup finely chopped celery
1/2 tsp rosemary, fresh or dried (I used fresh)
1/4 cup dark beer (I omitted)
1/2 cup chicken stock or brown stock
1/4 cup wholegrain prepared mustard (I used Luzianne Creole Mustard- our fave)
salt and freshly ground black pepper
2 Tbs chopped fresh Italian parsley

1. Heat the oil in a heavy casserole large enough to hold the chicken tightly in a single layer. Add half the chicken legs, brown over high heat, remove from the pan and repeat with remaining chicken. Lower heat, add the onions and celery. Saute until tender, about 8 minutes. Stir int he rosemary, beer, and stock.
2. Return the browned chicken to the pot, cover and cook over low heat until it is cooked through, about 45 minutes, turning once during cooking.
3. Remove the chicken from the pot and increase the heat to high. Stir in the mustard, season to taste with salt and pepper and return the chicken to the pan, basting it with the mustard sauce. Transfer the chicken to a serving platter and spoon the sauce over the top. Sprinkle with parsley and serve.