01 -
Slice zucchini into 1.2 cm rounds. Place in a colander, sprinkle with a generous pinch of salt, and toss to coat evenly.
02 -
Let salted zucchini sit for 15 minutes to release excess water. Rinse thoroughly under cold water and pat very dry with paper towels.
03 -
Heat olive oil in a large skillet over medium-high heat. Add diced onion; sauté for approximately 2 minutes until softened. Add garlic and ground beef. Cook, breaking up meat with a spoon, until browned with no visible pink, about 5 minutes.
04 -
Stir drained diced tomatoes, Italian seasoning, salt, and pepper into the cooked beef mixture. Remove skillet from heat.
05 -
Preheat oven to 175°C (350°F).
06 -
In a 20x20 cm baking dish, spread half of the beef mixture. Top with half of the zucchini slices, then layer half of the mozzarella cheese. Repeat the layers with remaining meat, zucchini, and cheese.
07 -
Bake on the middle rack for 20–25 minutes until cheese is melted and golden-brown at the edges.
08 -
Allow to rest for 10 minutes before slicing to serve.