Fry in a pan with the butter, season with salt and pepper, then put in a baking dish.
In the same pan, sauté the finely chopped garlic and onions, add the tomato paste, sauté a little and then deglaze with wine or sparkling wine. Now add the drained green pepper and cream. Mix the sauce well and pour over the king prawns.
Cook in the oven at about 220 ° for about 20 minutes.
Baguette is enough for us as a side dish, alternatively I recommend rice and a fresh salad.