Heat a little butter in a frying pan. Add the onion and garlic, cooking for a few minutes to soften.
Add the spinach and cook until wilted. Place into a large bowl and cool. Squeeze out excess water.
Add the feta, zest, parmesan, nutmeg, salt and pepper to the spinach.
Melt the remaining butter for brushing the filo.
Place a sheet of filo on to a clean bench. Brush with butter. Place some spinach mixture on the long side. Wrap loosely, then twist into a spiral.
Place onto a lined baking tray. Continue with the remaining. Refrigerate until ready to cook.
Preheat the oven to 190C.
Brush the spirals with egg wash. Bake for 20 minutes until golden.
Serve with chutney if you like.
