Boil the noodles and drain the water. Put the butter in a saucepan and melt it. Add the onions you chopped and fry. Sort and wash the spinach. Chop it into large pieces and add it to the onion. Add the finely chopped sausages, crushed garlic and salt and mix.
Place the noodles in a greased baking dish. Add spinach and half of the grated cheddar cheese and mix. Pour the beaten egg and yoghurt mixture in a bowl and sprinkle the remaining cheddar cheese. Bake in a preheated 180 degree oven for 20-25 minutes. Serve hot.
