Tasty White Fish Crumble Casserole Cuisine: American Author: Editor Prep time: 20 mins Cook time: 35 mins Total time: 55 mins Serves: 5 Ingredients 1 lb white fish fillets 1 1/4 cups milk Salt and freshly ground black pepper to taste 1 tbsp sunflower oil 1/3 cup butter 1 medium onion, peeled and finely chopped