Preheat your oven to 375°F (190°C) and lightly grease a baking dish to prevent sticking.
Lay a layer of zucchini slices across the bottom of the dish, overlapping slightly for even coverage.
Spread some minced garlic evenly over the zucchini, then drizzle with a teaspoon of olive oil and sprinkle with salt, pepper, and oregano.
Add a layer of tomato slices on top of the zucchini, arranging them in a similar overlapping pattern.
Repeat the layering process—zucchini, garlic, seasoning, and tomatoes—until all ingredients are used, finishing with a layer of tomatoes on top.
Sprinkle the shredded cheese evenly over the top layer, covering the entire surface to give a cheesy crust as it bakes.
Place the dish in the oven and bake for about 35-40 minutes, until the edges are crispy and the cheese is bubbly and golden.
Remove from the oven and let it rest for a few minutes—this helps the juices settle and makes serving easier.
Slice into portions, revealing the layers with melted cheese and crispy edges, and serve warm.