In a bowl, combine the sauerkraut, corned beef, cheese and dressing. Place 1/3 cup of the mixture in center of each egg roll wrapper, fold two opposite corners over so tips are touching. Brush water on one of the remaining corner and edges. Roll opposite corner around filling mixture. Repeat with remaining filling. Deep fry at 375 for 3-5 minutes or until golden. Serve with mustard for dipping.
These can be also sprayed with cooking spray or brushed with oil and baked at 425 for 10-15 minutes.