1. Prepare the Meat Sauce

1. Heat a large skillet over medium-high heat. Add the ground beef or turkey, breaking it apart as it cooks.
2. Once the meat is browned and no longer pink, drain any excess fat.
3. Add the diced onion and minced garlic. Sauté for 2-3 minutes until fragrant.
4. Pour in the marinara sauce, then season with salt, black pepper, and dried oregano. Let simmer on low heat for 10 minutes.

2. Prepare the Cheese Mixture

1. In a large mixing bowl, combine the cottage cheese, ricotta cheese, eggs, and Parmesan cheese.
2. Stir in 2 cups of the shredded mozzarella.
3. Mix well until everything is evenly combined.

3. Cook the Lasagna Noodles (If Using Boiled Noodles)

1. Boil a large pot of salted water. Cook the noodles according to package instructions until al dente.
2. Drain and rinse with cold water. Lay them flat to prevent sticking.

4. Assemble the Lasagna

1. Preheat oven to 375°F (190°C).
2. Spread a thin layer of meat sauce on the bottom of a 9×13-inch baking dish.
3. Add a single layer of lasagna noodles.
4. Spread ⅓ of the cheese mixture evenly over the noodles.
5. Add ⅓ of the meat sauce over the cheese layer.
6. Repeat the layers two more times, ending with a final layer of noodles and meat sauce.
7. Sprinkle the remaining mozzarella and Parmesan cheese over the top.

5. Bake the Lasagna

1. Cover the dish with aluminum foil and bake for 45 minutes.
2. Remove the foil and bake for another 5 minutes, until the cheese is golden and bubbly.
3. Let the lasagna rest for 15 minutes before slicing and serving.