Preheat oven to 500 degrees F and, if you have one, place a pizza stone on the bottom rack of the oven.

In the bowl of a food processor, combine tomatoes, olive oil, and salt and freshly ground black pepper to taste and process until smooth. Divide sauce between the 2 pizzas and smooth to spread evenly, leaving a 1/2-inch border along the edges of the dough. Sprinkle basil leaves on top of sauce and then top with Parmigiano-Reggiano. Finally, divide mozzarella slices between 2 pizzas, and bake for about 8 minutes, or until cheese is bubbling and the edges are golden brown.

In a large bowl, combine yeast with water, olive oil, salt and stir well to proof. After 5 minutes, add half of the flour and mix well to thoroughly incorporate. Add all remaining flour except 1/2 cup and mix well with your hands. Transfer dough to a lightly floured work surface and knead dough for at least 5 and up to 7 minutes, adding enough additional flour as necessary to form a smooth and elastic dough. Dough should not be sticky. Transfer dough to a lightly oiled 2 or 3 quart bowl and turn to coat with oil. Cover with a damp towel and let rise in a warm place until doubled in size, usually at least 1 hour.

Preheat oven to 500 degrees F and if you have one, place a pizza stone on the bottom rack of the oven.

Divide dough into 2 portions (for 2 (12-inch) pizzas) and form into balls. Place on a lightly oiled baking sheet and cover with a damp towel. Let rest for 15 minutes, then transfer to a lightly floured surface, shape as desired and roll out to a thickness of 1/4-inch. Transfer dough to a pizza peel.

Yield: 2 (12-inch) pizzas, serving 4 to 6