Cook the Spätzle in plenty of boiling salted water for about 10 minutes
In the meantime, clean the peppers, leek and mushrooms and wash everything. Cut the mushrooms into thin slices. Cut peppers into strips, leek into fine rings. Wash meat briefly if necessary, dab dry with kitchen paper and cut into cubes. Wash herbs and chop finely
Drain the spaetzle. Heat the oil in a very large (preferably ovenproof) pan. Brown the meat in it while turning. Season and remove. Fry the vegetables in the frying fat for about 5 minutes. Deglaze with 1/4 l water and cream, bring to the boil. Stir in stock and sauce thickener, season to taste. Add spaetzle, meat and herbs
Grate the cheese over the pan. Bake in the preheated oven at the highest setting for approx. 5 minutes or grill over the top. Or simply stir in the cheese and let it melt