4: Arrange the ham on top and any other toppings you would like. I've added chorizo here...
5: ...some finely diced mozarella...
6: ...goat's cheese, mushrooms, etc.
7: Bake right away in a really hot oven, and near the bottom of the oven rather than in the middle. As soon as the pizza is cooked, take it out of the oven, drizzle a little herb olive oil over and scatter a few fresh basil leaves on top. Serve immediately.
Remarks
This is typically something to make after a pizza party: if you have leftover ingredients from your last batch of pizzas, but no more dough and really can't face making any more, a bit of puff pastry and you're good to go.