Mix the egg, 1 pinch of salt, 50 g flour and 100 ml milk to a smooth dough. Let the dough swell for about 30 minutes. In the meantime clean and wash the spinach. Blanch in plenty of boiling salted water for about 1 minute.
Roughly dice the sheep's cheese and ham. Peel and finely dice the onion. Heat the fat and stew the onion for about 2 minutes. Dust with 15 g flour. Add stock and 125 ml milk while stirring constantly, bring to the boil and simmer a little.
Heat oil in a coated pan (30 cm Ø) and bake a pancake from the prepared dough. Spread spinach, ham and feta cheese on the pancake and roll it up. Wash parsley, dab dry, pluck leaves and chop finely.
Season sauce with salt and pepper, bring to the boil again and stir in parsley. Cut the pancakes into three pieces and add the béchamel sauce.