Bina is a good family friend who is from a part of Italy just south of us. She’s also a great cook.
Slice a pagnotta loaf in half lengthwise (it’s the big round one with a hole like a donut). Lightly toast in the oven on broil.
Brush olive oil on each half, and then season with salt, pepper, and oregano.
Thinly slice a tomato and place on bread. Brush with oil and grab the salt, pepper, and oregano one more time to season the tomatoes. Sprinkle shredded mozzarella on top and reheat in oven. Let cool, slice, and serve.