Leftover turkey casserole - Good Food Middle East

Ingredients

• 2 onions, finely chopped
• 1 eating apple, cored and chopped
• 2 tbsp olive oil
• 1 tsp dried sage, or 5 sage leaves, chopped
• 2 tbsp plain flour
• 300ml vegetable or chicken stock
• 2 tbsp wholegrain mustard
• 2 tbsp runny honey
• 400g-500g leftover turkey, shredded
• about 350g leftover roasted vegetables like roast potatoes, parsnips, celeriacs and carrots, chunkily diced