Harvest Roasted Chicken - Big Recipe

Ingredients

• 2 tablespoons butter
• 1 large onion, sliced
• 1 teaspoon salt, plus more, to taste
• 4 teaspoons white sugar
• 5 medium apples, peeled and cored, cut into 1/4-inch-thick slices
• 1 pound Yukon Gold potatoes, optionally peeled and cut into 1/4-inch-thick slices
• 6 chicken thighs, bone-in and skin-on
• 2 tablespoons olive oil
• 2 tablespoons fresh rosemary, chopped, plus more, to taste, whole sprigs, for garnish
• ground black pepper, to taste