The Smokehouse in Sorrento, Victoria does an excellent Boursin pizza so I attempted to replicate it. It worked and was delicious, so here it is! They use a basil pomodoro pesto sauce but I did it the first time with just a plain basil pesto sauce. Either is fine, but I prefer the pomodoro version. I've also done it without the mozzarella, but it's better with just a little sprinkled on top. You could also substitute another cheese for the Boursin, like fetta, goat's cheese or even Philadelphia cream cheese. Awesome pizza!