Wash, thread and break the green beans. Cook in salted water for about 25 minutes. Drain well in a colander.
Dice the streaky bacon and fry until golden in a pan. Peel the onion and chop finely. Add the peeled, finely chopped garlic clove to the bacon and fry through. Add the chopped parsley and the ham cut into even strips. Heat for about 2 minutes, then add the beans. Now pour the ham and vegetables mixture into a greased, ovenproof dish.
Whisk the eggs with the sour cream and 30 g parmesan cheese. Season to taste with salt, pepper and paprika powder. Pour over the beans. Sprinkle the remaining 30 g grated parmesan on top.
Put the tin in the preheated oven at 200 ° C top / bottom heat (gas: level 4) and bake for approx. 25 minutes. Serve hot.