1/2 c. chopped onion
2 (10 oz.) pkg. frozen chopped spinach
1 c. mayonnaise (yogurt or sour cream)
1/4 c. lemon juice

Cook spinach according to directions. Drain well. Add remaining ingredients and blend well. Chill for 2-3 hours or overnight. Serve with vegetables, crackers, corn tortillas chips or pita wedges.