In a 12-inch cast-iron skillet, heat oil and butter over medium-high heat; reduce heat to medium. Add onion and celery; cook until softened, about 4 minutes. Add rice, garlic, thyme, and sage; cook for 2 minutes, stirring frequently. Stir in Chicken Broth, cream, salt, pepper, and bay leaves; bring to a boil over medium-high heat. Remove from heat; stir in chicken.
Bake, covered, until rice is tender, about 35 minutes. Remove from oven; let stand for 10 minutes. Discard bay leaves. Garnish with sage, thyme, and celery leaves, if desired.
Recipe by Taste of the South at https://tasteofthesouthmagazine.com/chicken-bog/