Cut the sheep`s cheese into small cubes and place in a baking dish. Preheat the oven to 180 ° C (top-bottom heat). Cut the peppers and onions into small cubes.
Heat some oil in a pan, fry the onions until translucent and then add the sliced meat. Finally, briefly add the peppers. Now just season and put everything in the baking dish (including the juices).
Now bake the casserole for about 20 minutes. Then sprinkle cheese on it and then put it in the oven again for about 5 minutes.
Serve the tzatziki extra for dipping. French fries also go well with this.