I've had this photo sitting in the drafts for ages ...
I made this up years ago.
I use bake at home bread rolls that I sometimes have in the freezer.
You can put anything on top.
My favorite things include but are not limited to :
olives ... any and all kinds
top with a bit of mozzarella cheese
Cut open the bread rolls, top with your choice of toppings, bake in oven til cheese is melted ...