Cut the onions into wedges. Chop the garlic and oregano. Drain the vegetable mixture.
Fry the minced meat in oil until crumbly. Then add onions and garlic and fry. Stir in the tomato paste. Add and cut the tomatoes. Stir in the broth, vegetable mixture and 2/3 of the oregano. Season the sauce with salt and pepper, bring to the boil and stew for about 5 minutes.
Crumble the feta cheese. Fry the gnocchi in butter until golden brown, then fold into the sauce. Scatter the feta cheese and oregano on top.