Preheat the oven to 200 ° C. Chop the onions, parsley, bell pepper and feta cheese into small pieces. Put the minced meat, egg, oat flakes and a bread roll soaked in water in a bowl and knead into a dough. Season to taste with salt, pepper, chilli powder and paprika.
Now put in an ovenproof dish. Make a well in the meat loaf and pour in the grated Gouda cheese. Bake at 180 ° C for 50 - 60 minutes.