Sauté the onion, garlic and celery in a skillet with the olive oil.
Pour the croutons into a large mixing bowl.
Add the onion mixture to the croutons and mix well.
Stir in the spices and then transfer the entire mixture to a baking dish.
Pour the chicken broth over the top of the croutons and let it sit in the fridge while you preheat your oven to 350 F.
Bake the stuffing for 45 minutes to 1 hour or until it is golden brown and slightly crispy on top.
If you are making this ahead of time and need to reheat it, simply cover it with foil and heat at 350 F. for approximately 20-30 minutes or until warmed through.
Notes
Please note that the nutrition data below is a ballpark figure. Exact data is not possible.