Preheat your oven to 200 degrees celsius (400 F).
Core the apples and cut into wedges, approx. 1.5-2cm thick.
Cut the sweet potatoes into batons a similar to the apples (you can choose to peel the vegetables or leave them as is.
Pop apple and veggies into a roasting pan and toss with oil (you can season at this stage if you wish, however I often find the pork sausages add lots of flavour during cooking so it might pay to wait)
Optional (drain and rinse the canned chick peas, add to the roasting pan and toss with the other vegetables so they are also oiled.
Slice the pork sausages in half and add to the roasting pan.
Bake at 200 degrees celsius for 35 minutes
At 35 minutes give the roasting pan a good stir to free up any stuck veggies and add the spinach leaves
Bake for a further 5 minutes (so they start to wilt)
Remove from the oven. Season with salt and pepper as needed and serve