Melt butter in a skillet, and cook coated beef cubes until evenly browned.
Transfer beef to slow cooker and add onions, carrots, celery, garlic, bay leaves, salt, sugar, pepper, paprika, cloves, lemon juice and Worcestershire sauce. Pour in water and stir.
Cover and cook on LOW 10 to 12 hours or on HIGH 5 to 6 hours. Serve hot!!