Place sweet potato on a baking paper lined tray. Spray with oil. On a separate baking paper lined tray place frozen Birds Eye Whiting. Place both trays in a preheated oven at 190°C and cook for 20 minutes or until fish is cooked through and sweet potato is soft and golden.
Meanwhile, blanch or steam Broccolini® for 4 minutes or until tender. Combine olive oil, lemon juice and garlic to make dressing. Season to taste and set aside.
In a large bowl, toss cooked sweet potato, Broccolini®, walnuts and coriander. Drizzle with dressing and gently toss to combine. Divide salad between serving plates and crumble over fetta. Serve immediately with cooked whiting.