In a medium mixing bowl combine the crabmeat, bread crumbs, green onion, sweet pepper, mayonnaise or salad dressing, egg white, mustard, lemon or lime peel, and black pepper. Mix well. (If mixture seems dry, stir in 1 tablespoon milk.)
Gently shape mixture into 18 small patties. Spray a shallow baking pan with nonstick coating. Place patties in pan. Bake in a 350 degree F oven about 15 minutes or until the patties are a light golden brown.
Meanwhile, in a small bowl stir together yogurt, mayonnaise, green onion, horseradish, and parsley. Pass sauce with hot crab cakes. Makes 9 appetizer servings.