Preheat the oven to 400 degrees F / 200 degrees C.
Sweat the 14 ounces zucchini: Arrange slices on paper towels and lightly sprinkle with salt. Let sit for 10 minutes, then blot with paper towels to remove excess moisture.
14 ounces zucchini
Heat 2 tablespoons olive oil in a large frying pan over medium heat. Add 1 yellow onion and 2 cloves garlic and sauté until soft. Add 1 pound ground beef or ground turkey, 2 tablespoons Italian seasoning, 1 teaspoon sea salt, and ¼ teaspoon ground black pepper. Stir together and cook until lightly browned.
2 tablespoons olive oil, 1 yellow onion, 2 cloves garlic, 1 pound ground beef or ground turkey, 2 tablespoons Italian seasoning, 1 teaspoon sea salt, ¼ teaspoon ground black pepper, 1 clove garlic
Stir in 4 tablespoons tomato paste and 3 tablespoons water until well combined. Reduce the temperature to medium-low and simmer for 5 to 10 minutes, stirring occasionally.
4 tablespoons tomato paste, 3 tablespoons water
In medium saucepan, combine 1½ cups heavy whipping cream, half of the shredded cheese, and 1 clove garlic. Simmer over medium-high heat. Reduce to medium-low and cook, stirring continuously, for about 5 minutes or until thickened. Season with Salt and ground black pepper to taste.
1½ cups heavy whipping cream, 2 cups mozzarella cheese, Salt and ground black pepper to taste
In a 9x13-inch baking dish, layer half of the meat sauce on the bottom. Spoon some of the cheese sauce over the meat, then top with a single layer of zucchini slices. Repeat layers, finishing with the remaining cheese sauce and a final sprinkle of cheese on top.
2 cups mozzarella cheese
Bake 18 to 20 minutes or until cheese is golden and bubbly. Let rest for 15 minutes before serving.