INGREDIENTS
1 tbsp
unsalted butter
6
chicken thighs, about 2 to 2 1/2 pounds
Salt
3 lb
yellow onions, sliced 1/4-inch thick, root to stem, about 6-8 cups sliced
1 tbsp
brown sugar, packed
2
bay leaves
2 tsp
dried thyme
2 tbsp
smooth Dijon mustard
1 1/2 cups
dark beer
1 cup
chicken stock
Freshly ground black pepper