Mediterranean Chicken Thighs

Ingredients

• 2 tablespoons butter
• 2 tablespoons olive oil
• 6 bone-in chicken thighs (about 2 pounds)
• 1 can (14 ounces) water-packed small artichoke hearts, drained
• 3 shallots, halved
• 1/3 cup dry white wine
• 1/2 cup pitted Greek olives
• 1/3 cup reduced-sodium chicken broth
• 1 tablespoon lemon juice
• 1 garlic clove, thinly sliced
• 1 tablespoon drained capers
• 1 teaspoon ground sumac or za'atar seasoning