Sweet and Smokey chicken

I got this recipe from my sister..its soo good..Serve with rice!

2 medium onions , sliced(or less)
3 lbs chicken legs(i use chicken breasts)
1 1/2 to 2 tsp hickory smoke liquid(its next to the bbq sauce..little bottle)
salt
1/2 cup ketchup
1/2 cup maple syrup
1/4 cup vinigar
2 tbsp mustard

Place onions in greased 13x9x2 baking pan. Arrange chicken in single layer. Sprinkle with salt
Combine remaining ingredients and pour over chicken , completely coating it.
Bake uncovered at 350 for 1 hour until juices run clear, basting several times..

This could also be done in slowcooker on low for a few hours im sure!!!

YUMMM...Sauce is so good over rice