Take the puff pastry out of the freezer and let it thaw for ten minutes. In the meantime, peel and dice the onion, fry briefly in a coated saucepan. Then dice the ham and add it. Season with salt and pepper, add the sour cream.
Place a dollop of the mixture in the middle of each puff pastry disc. Then roll up the slices. Now place the bags on a baking sheet and bake in the preheated oven at 175 ° C for 20-25 minutes.