Mix eggs, 1 pinch of salt and 200 ml milk. Gradually stir in wholemeal wheat flour and finally add approx. 100 ml water. Cover the pancake batter and let it swell for about 45 minutes.
Peel onion and garlic. Chop the onion finely, chop the garlic. Sort the spinach, wash it thoroughly and let it drip off a little. Heat the oil in a large pot, lightly brown the onion and garlic.
Add damp spinach, cover and allow to collapse. Steam in open pot for about 5 minutes. Season with salt, pepper and nutmeg and let cool off. Heat 20 g fat in a saucepan, sauté the flour in it.
Add 250 ml milk and stock while stirring, bring to the boil and simmer over a low to medium heat for about 5 minutes. Cut blue cheese into pieces and melt in the hot sauce, season with salt and pepper.
Cut the ham into strips. Heat 1 teaspoon of fat in a pan (24 cm Ø), stir the pancake batter briefly and add approx. 1/6 of the batter to the pan with a ladle. Fry 6 thin, golden-brown pancakes, each with 1 tsp. fat, one after the other while turning and let them cool down a little.
Spread the spinach and ham on the pancakes and roll them up. Cut the pancakes in half and place them in an ovenproof dish, preferably with the seam side down. Pour cheese sauce over them and sprinkle with Gouda.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 30 minutes. Garnish with parsley.