Preheat oven to 375 degree F. Prepare Pizza Dough as directed, using the Individual Size Pizzas directions. Arrange prosciutto evenly over dough in each pan. Sprinkle with walnuts. Combine cheeses and sprinkle over each pizza.
Bake in the preheated oven for 20 to 25 minutes or until crust bottom is crisp and brown. Cool in pans on a wire rack for 5 minutes. Top with arugula and serve immediately. Makes 8 servings.