- Preheat the oven to 350 degrees F (175 degrees C). Grease a 7×11-inch baking dish. Place crumbled cornbread in a large bowl.
- Melt butter in a large skillet over medium heat. Add onion and celery and sauté until soft, 5 to 7 minutes.
- Add sautéed onion and celery to the crumbled cornbread. Stir in chicken stock, eggs, sage, salt, and pepper until well combined. Pour dressing into the prepared baking dish.
- Bake in the preheated oven until dressing just starts to turn golden brown around the edges, about 30 minutes.