Thaw Pastry: remove frozen puff pastry from freezer and place on the bench to thaw.
Preheat the oven: Preheat your oven to 180°C / 350-375°F / Gas Mark 4-5.
Dice the chorizo: remove the casing from the 2 chorizo sausages, break them in half then add to the food processor. Blitz till finely diced.
Make the filling: add pork mince, chorizo sausages, dried onion, panko breadcrumbs, 1 egg, salt and pepper to food processor and blitz to combine.
Fill the pastry: working one sheet at a time, lay thawed puff pastry onto chopping board. Use clean hands to roll a thin log of the pork chorizo mixture onto the pastry. Roll the pastry to cover the filling and leave a slight overlap (1cm), cut the pastry to pull away from rest of sheet. Use a pastry brush to coat the overlap to seal the sausage roll.
Transfer to baking tray: use a sharp knife to cut the long sausage roll into individual pieces, transfer these to a baking tray.
Brush with egg: use a pastry brush to coat the top of each sausage roll with the whisked egg. Repeat for each.
Oven bake: place the sausage rolls into the oven and cook for 25 to 30 mins.
Serve and enjoy: once the sausage rolls are cooked and the pastry golden brown, use oven mits to remove the tray from the oven. Use kitchen tongs to transfer to a wire cooling rack, let sit for 1 - 2 mins. Then plate and serve with tomato sauce, ketch-up or BBQ sauce!