In a large mixing bowl, stir in grated ginger, orange zest and orange juice into Lee Kum Kee (Professional) Hoisin Sauce .
Pre-heat oven to 180C.
In the sauce mixing bowl, add sweet potatoes and pumpkin and mix well.
Pour sweet potato and pumpkin into roasting tin. Drizzle vegetable oil over the contents and cover dish with tin foil.
Roast for 20 minutes. Remove foil and return to oven to for another 10 – 15 minutes until vegetables starts to caramelised.
Garnish with baby spinach and chopped walnuts before serving. Serve with a warm bread and green side salad.