Step 1

Preheat the oven to 375 degrees F (190 degrees C). Move the oven rack into the top third of the oven.

Step 2

Heat olive oil in a large skillet over medium heat, and spread zucchini slices into the skillet in a single layer. If they don't fit, cook them in batches. Sprinkle pieces of garlic over zucchini, and cook until zucchini are golden brown on both sides, about 8 minutes per side. Remove from heat.

Step 3

Arrange slices of zucchini in a 9x12-inch glass baking dish, alternating with slices of mozzarella cheese and tomato, so that the slices overlap each other in a neat row pattern. Sprinkle Parmesan cheese and basil over the dish, and season to taste with salt and pepper.

Step 4

Bake in the preheated oven until the cheese is melted and brown and the dish is bubbling, about 30 minutes.