Spinach and feta filo swirl pie

Method

1. For the filling, gently fry both types of onion in a pan with a glug of olive oil and seasoning for 6-8 minutes until starting to soften. Set aside in a large mixing bowl while you prepare the spinach.
2. Wilt the spinach in batches in your largest pan with a tiny splash of water (or in their bags in the microwave, if you prefer). Drain, cool, then squeeze out any excess water in a colander using a wooden spoon. Put in a clean tea towel or muslin square and squeeze tightly to remove any remaining water. Roughly chop and put in the bowl with the onions.
3. Add all the cheeses, the eggs, fresh and dried herbs, chilli flakes, lemon juice, pine nuts (if using), a good grating of nutmeg, a little salt and plenty of black pepper, then mix thoroughly.
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5. Heat the oven to 190°C/170°C fan/gas 5. Put 1 rectangular sheet of filo on a work surface, brush all over with melted butter, then top with another sheet of filo, brushing as before. Add a third of the spinach mixture in a line along one long edge, then roll up into a cylinder, brushing the filo with butter as you roll (see tip).
6. Starting from one end, wind the filo into a coil and put on the baking sheet. Repeat twice more in the same way, coiling each filo cylinder around the previous one to make a larger spiral. Brush the finished pie all over with melted butter (or use olive oil if you’ve run out), then sprinkle with the seeds. Bake for 50-60 minutes or until golden brown and cooked through.
7. Serve scattered with lemon zest and chopped dill, with bowls of yogurt and olives alongside.