I buy ready made puff pastry. I buy sausage meat and mix in whatever I fancy. If you use paxo/dry stuffing mix it with hot water and then the same volume odd sausage meat you get a firmer sausage that is delicious. But you can ensure just use sausage meat, I just add whatever I fancy, apple sauce, cranberry sauce, marmalade, grated apple, chopped walnuts, crumbled blue cheese, grated cheese, candied peel, five spice, chopped bacon, black pudding, grated pears soaked in port, mince meat, chutney, etc
you need to make sure you glaze the raw rolls in egg wash, I like to do mine several times and get a really crispy top. I also sometimes add sprinkles on top for extra crunch and flavour ( Parmesan works beautifully as does finely bashed up croutons, bacon bits, finely chopped nuts and herbs.
you can also just cut the pastry into squares and then add a piece of bacon and a sausage corner to corner with your choice of relish/sauce cheese and make turnover style things.