I'm not sure what recipe you are referring to, but we just made a dessert pizza for my friend's birthday and it was delicious.
First we rolled out the dough and placed bits of peanut butter all over the pizza (it melts down into a sauce when you bake it so it doesn't need to be a thick layer). Then we topped it with dark chocolate bits and mini marshmallows. The final touch was a sprinkling of powdered sugar. We baked the pizza until the crust was just starting the brown (you don't need to cook it as long a typical pizza because it is really nice when the crust is a little softer). The peanut butter melts into the chocolate and marshmallows get nice and toasted on top.
It sounds like a sugary nightmare, but the combination of the plain pizza dough and the melted toasted toppings was really delicious.