Boil the potatoes and carrots in the vegetable stock, sauté the spinach and the finely chopped onion in a little oil.
Put all the ingredients with the sheep`s cheese in a bowl and season them properly (!) With salt and pepper, I also always use nutmeg and fresh or frozen herbs. Puree everything, add a piece of margarine (or butter) and stir well.
Cut the dough into small, equal-sized rectangles with a knife. Place about 1 tablespoon of the filling in the middle of a rectangle for each dumpling and cover with a second piece of dough. Press the edges together firmly with a fork. If you don`t squeeze hard enough, they`ll pop open when you cook.
The finished Maultaschen then have to cook in boiling salted water for about 10 minutes. Then you can either fry them, use them as a soup or gratinate them.