olive oil • onions, thinly sliced (360 g) • frozen spinach, defrosted and drained of excess water • dill, roughly chopped • finely grated lemon zest • frozen all butter puff pastry sheet, defrosted • Greek feta cheese, roughly crumbled • baking potato, skin on and scrubbed clean, then very thinly sliced 1 mm thick (250 g) • garlic cloves • red chilli (10 g) • ground cumin • paprika powder •