White Fish Cakes with Lemon-Parsley Sauce

cod, tilapia, potatoes, milk, lemon, green onion, plain flour, egg, panko breadcrumbs, olive oil, salt, black pepper, spinach, vegetable spread, parsley, black pepper, lemon, garlic Nutrition Facts Calories 397.6 Total Fat 11.4 g Saturated Fat 1.8 g Polyunsaturated Fat 1.1 g Monounsaturated Fat 5.6 g Cholesterol 111.3 mg Sodium 265.9 mg Potassium 348.0 mg Total Carbohydrate 07.9 g Dietary Fiber 0.3 g Sugars 0.7 g Protein 27.2 g Vitamin A 9.3 % Vitamin B-12 21.9 % Vitamin B-6 17.6 % Vitamin C 16.1 % Vitamin D 2.5 % Vitamin E 7.6 % Calcium 3.1 % Copper 2.6 % Folate 6.1 % Iron 5.9 % Magnesium 12.7 % Manganese 2.0 % Niacin 14.7 % Pantothenic Acid 2.2 % Phosphorus 19.0 % Riboflavin 8.4 % Selenium 61.0 % Thiamin 7.2 % Zinc 5.8 % *Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.