In a small nonstick skillet over medium heat, cook onion and celery in butter until tender.
In a large bowl, combine the bread cubes, salt, poultry seasoning, sage and pepper. Stir in Onion mixture. Combine broth and eggs; add to bread mixture and toss to coat.
Transfer to a 3-qt. Slow Cooker coated with cooking spray. Cover and cook on low for 3 hours or until a thermometer reads 160 degrees.
Notes
In place of the cubed day-old white and whole wheat bread I use Pepperidge Farm Herb Seasoned Stuffing Cubes.I like my stuffing extra moist so I use additional broth.