Whilst the potatoes are cooking gently cook your diced onion in a little oil, once they are softened add the spinach and cook for 1 more minute and set aside

Once the potatoes are cooked let them cool slightly and peel the skins off and mixed the potato flesh with the onions and spinach

Season with salt and pepper and leave to cool

To assemble line a cake tine or oven proof dish with one sheet of filo making sure there is some pastry hanging over the edge and brush lightly with oil

Repeat this process with 2 or 3 more sheets of filo

Spoon the sweet potato mixture into the lined dish gently pushing the mixture right to the edges

Fold the overhanging edges over the top of the pie, scrunching the edges as you go, this does not need to be done neatly

Brush the top with a little more oil and bake in the oven until golden brown

Serve with some steamed veg or salad.