Preheat oven to 425°F.
Line 2 baking sheets with foil and lightly oil or spray with olive oil cooking spray.
Slice potatoes ¼-inch thick and discard small, rounded ends.
Place in a medium bowl with 2 tablespoons olive oil and toss well to coat. Add cheese, salt and red pepper and toss again to coat as evenly as possible.
Place in a single layer on baking sheet and cook for 25 minutes.
While potatoes are cooking, stir together remaining oil, tomatoes, mozzarella, balsamic, and garlic in a medium bowl.
Top potatoes with equal amounts of tomato mixture and bake for 5 minutes more or until cheese is just starting to melt; sprinkle with basil. Serve warm or at room temperature. Makes 8 servings.