Cut into the pork fillet from above, create pockets on the sides so that it can be filled. Season with salt and pepper.
Mix the cream cheese, bacon, onions, garlic, chives and cheese and season with salt and pepper. Pour the mixture into the pork tenderloin. Seal the pork tenderloin with toothpicks or string. Mix the rest of the mixture with the cream and white wine, season again.
Cook the fillet in a baking dish at 160 ° C for 45 minutes. After about 25 minutes, pour the cream and wine sauce over them.