Preheat the oven to 450° F. Roll out the pizza dough into a thin layer. I roll mine to about 1/4" thick. We like our crust thin, so I shoot for 1/4" thick or even thinner.
Sprinkle some cornmeal on a pizza stone. Place the pizza dough on the pizza stone. If you like crust, roll some of the edge up to create a crust. Place the dough in the oven for 5 minutes.
Remove the pizza dough from the oven. Spread marina on over the dough. You can add however much you like. I prefer less sauce. You'll want to just eye-ball it and do it to your liking. Sprinkle the mozzarella over the sauce. Add the prosciutto. (We used about 5 slices of Prosciutto because that's all I had. You're welcome to use more if you'd like)!
Now, scatter the blackberries across the pizza. I kept some of mine whole, and then cut some of mine in half.
Place the pizza in the oven for 15 minutes, or until golden brown and the crust is cooked throughout.
Lastly, remove from the oven. Add fresh basil, slice, and serve!