Preheat your oven to 375°F and lightly grease a 9x13-inch baking dish with cooking spray or butter. This prevents sticking and ensures easy serving portions for your crowd Thanksgiving celebration.

Heat butter in a large skillet over medium heat, then add diced onion and celery. Sauté for 5-7 minutes until softened and fragrant, stirring occasionally to prevent browning and develop sweetness.

In a large mixing bowl, combine bread cubes with the sautéed vegetables and all dried herbs. Toss gently to distribute seasonings evenly, then add sliced mushrooms and chopped green beans throughout.

Whisk together chicken broth and beaten eggs in a separate bowl, then pour this mixture over the bread mixture slowly. Stir the cozy fall stuffing casserole crowd base gently but thoroughly, allowing bread to absorb liquid without becoming dense and heavy.

Fold in chopped turkey strips and fresh parsley, reserving some parsley for garnish on top. Season with salt and black pepper, adjusting to your taste preferences and dietary needs.

Transfer the mixture to your prepared baking dish, spreading evenly and pressing gently to compact slightly. Bake for 35-40 minutes until the top is golden brown and a knife inserted in the center comes out clean.

Remove from oven and let rest for 5 minutes before serving, allowing flavors to set and settle completely. Garnish with reserved fresh parsley for color and a bright finishing touch.