Combine the breadcrumbs, garlic, Parmesan, basil, parsley, salt, and pepper in a medium-sized mixing bowl. Set aside.
Cover the bottom of a 3-qt casserole or baking dish with a layer of sliced tomatoes. Sprinkle 1/2 cup mozzarella and 1/3 of the breadcrumb mixture over the tomatoes. Repeat twice, using all the remaining ingredients.
Drizzle olive oil on top and cover with foil. Bake for 30 minutes. Remove the foil and bake for an additional 10 minutes, or until bubbly and the cheese has browned.
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