Peel and chop the onion and garlic. Heat 1 tablespoon of oil. Sauté onion and garlic in it. Add spinach unfrozen and 8 tablespoons of water. Steam covered for 10-15 minutes.
Heat 1 tablespoon of oil in a frying pan. Dab the fillet dry, cut it into 8 slices and fry it for about 2 minutes on each side. Season with salt and pepper. Take out
Cheese rind. Cut bread into 8 diagonal slices and place on a baking tray. Stir crème fraiche into the spinach. Season to taste with salt, pepper and nutmeg
Cover breads with spinach, fillet and cheese. Bake under the hot grill for 2-3 minutes or in a preheated oven at the highest setting for approx. 5 minutes