I make pizza swirls with a normal pizza dough (yeast, water, flour, salt and olive oil), but some people make them with puff pastry. If you want to, you can just buy the dough/pastry.
You roll out the dough to a rectangle.
Put the tomato base on, as well cheese (grated), ham and other pizza topping. Too much can make the swirls lose their shape, so have to keep that in mind. You can also use other fillings, and if using a sweet dough, you can make them with cinnamon, apple/cinnamon, blueberry/vanilla and so on.
Roll it up like a Swiss roll and cut into slices. Put the slices on baking trays lined with baking paper or in muffin cases, with the cut sides facing up and down.
If using a pizza dough, let it rise until doubled in size, and then bake. If using puff pastry, bake them in the oven.
You can also make pirogi or pasties.