Repeat this until the dough has been used up.Allgaeu Kaesespaetzle:Preheat oven to approx. 180??C.In a hot frying pan melt part of the butter and gently saut?? the onion rings until they are soft and slightly caramelized.Mix the two types of cheeses together in a bowl.In an oven proof dish cover the bottom with some spaetzle, cover this with a layer of cheese.