Preheat your oven to 350°F and grease a 7x11-inch baking dish.
In a medium skillet, melt butter over medium heat. Add the diced onion and chopped celery, and sauté for 5 to 7 minutes until soft.
In a large bowl, combine the crumbled cornbread with the sautéed onion and celery. Stir in the beaten eggs, chicken stock, dried sage, rosemary, thyme, salt, and ground black pepper until well mixed.
Transfer the mixture into your prepared baking dish and bake in the preheated oven for about 30 minutes until the edges turn golden.
Let the dressing cool for a few minutes before serving warm. Enjoy your meal!