Ingredients
2 large sweet potatoes, cut into 2cm chunks
1 sprig of rosemary, leaves picked
1 sprig of thyme, leaves picked
2 red onions, peeled and sliced
100g of chestnuts, peeled and chopped, optional
2 slices of sourdough bread
1 lemon, zest and juice
10g of butter
250g of button mushrooms...