Chicken à la King by the Pioneer Woman is made with unsalted butter, white mushrooms, yellow onion, garlic powder, ground black pepper, Kosher salt, all-purpose flour, chicken stock, half-and-half cream, frozen peas, pimentos, and shredded cooked chicken. This hearty Chicken à la King recipe creates a creamy, comforting dinner that takes about 30 minutes to prepare and can serve up to 6 people.