Spinach Dip (Kopie)

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Ingredients
•1 (10 - oz.) package frozen chopped spinach
•1 cup nonfat yogurt
•1 cup nonfat sour cream
•1 (8 - oz.) can water chestnuts
•3 green onions
•1 packet dry vegetable soup mix

Instructions
Defrost spinach ahead of time, drain and press dry. Drain and chop chestnuts; chop green onions. Combine all ingredients except spinach, mix well. Fold in spinach last, mix well. Refrigerate 3 hours before serving.