Step 1Place the tomatoes in the bowl of a food processor or a blender and add the basil, oregano, garlic, olives and pepper. Pulse the sauce until thoroughly combined and smooth. Taste the sauce and season as needed (canned tomatoes will vary widely with sodium content, resulting in some sauces that require less salt than others). Remove the sauce to a bowl, lightly cover with plastic wrap and refrigerate until needed. This makes about 3 cups tomato sauce.
Step 1Prepare the oven, setting the temperature as high as it will go (most ovens will reach 500 to 550 degrees). It's best to start heating the oven at least 45 minutes before you plan to start baking.
Step 2Place one pizza disk on a peel sprinkled with extra flour or cornmeal to prevent sticking. Spread one-fourth cup sauce over the pizza, then sprinkle one-half cup mozzarella and 2 tablespoons Parmesan evenly over the sauce.
Step 3Slide the first pizza into the oven. The pizza will be done when the crust is puffed and rich golden-brown in color, the cheese is melted and the sauce is bubbling gently, from 6 to 12 minutes depending on how your oven is set up (the hotter the oven, the shorter the time). Remove the first pizza and cool for a minute or two to set up for cleaner slicing, or set aside in a warm place until the second pizza is baked.
Step 4Allow the oven to reheat while you assemble the second pizza. Bake the second pizza and serve immediately.