Crumble sausage into large skillet; cook over medium-high heat until almost browned. Add onions, celery and mushrooms to sausage; saut� until tender-crisp.
Combine bread, crackers and poultry seasoning in large bowl. Pour sausage and vegetables over bread; stir together.
Stir in enough chicken broth to moisten stuffing. Stir in eggs. Pour into well-greased 3 1/2-quart crockpot. Cook on High 1 hour; turn to LOW and cook an additional 4 to 6 hours. Ready in 5 hours.