Preheat oven to 350

Trim the three chicken breasts and then cut them length-wise into a total of 6 pieces

In one layer, spread chicken into a baking dish

Sprinkle with onion salt

Heat a large skillet and melt butter

Stir in onion and then mushrooms

Saute 5 minutes

When onions are transluscent, spoon over chicken

In bowl, mix sour cream and maple syrup

Pour over chicken

Sprinkle with paprika

Bake approximately 1 1/4 hours or until internal temperature of chicken is 165