Coat inside of slow cooker with non stick cooking spray. Add cut up bacon, hamburger, chopped onion, and celery to a large skillet. Cook hamburger mixture until ground beef is browned and onions are soft. ( drain ) Add remaining ingredients to skillet and stir until well combined. Pour mixture into slow cooker and cook on high 1 hour. Reduce heat to low and continue cooking 3 to 4 more hours. Turn to warm until ready to serve. Every slow cooker temperature varies. Check your dish after 3 hours and adjust cooking time accordingly.