In a frying pan, saute the onion and celery in the butter for 10-12 minutes, or until the onion and celery are tender.
Place the bread cubes in a large bowl. Pour the butter, onion and celery mixture over the bread cubes and mix. Add the remaining ingredients and mix well.
Spray a 2-quart casserole dish with cooking spray. Put the stuffing in the prepared pan. Bake at 350 degrees for 30-35 minutes or until golden brown.
*I like to make my own dry bread cubes. Two days before preparing the stuffing, I cut bread into 1" cubes, then allow them to dry in a big bowl for about 48 hours. Stir the bread cubes once or twice a day so they dry out evenly. They should be dry so they soak up the liquid in the recipe.*We say to use 13-15 cups of bread cubes. This is homemade dry bread cubes that still have a little bit of softness to them. Make sure the bread cubes are tightly packed into the cup. Don't drop them in so there is a lot of air around them, but press them down into the cup (even dried homemade bread cubes will press down in a little). This will help make sure you have enough bread to soak up the liquid. If you like a drier stuffing or if you use store bought crispy bread cubes, use more.**