Cabbage Strudel

• 8 sheets phyllo (frozen)
• 1 phyllo sheet at a time
• 1 borderon longest side
• 3/4 border on shorter sides
• 550 gr green (finely chopped)
• 50 gr pitted dates (chopped)
• 30 gr onion (chopped)
• 10 ml low-fat sour cream
• 5 ml prepared mustard
• 5 gr melted margarine