Preheat and Prep: Begin by preheating your oven to 350°F. While it's warming up, take a 13x9 inch baking dish and give it a light coating with non-stick cooking spray or a drizzle of olive oil to ensure nothing sticks.

Cheese Mixture: In a large mixing bowl, whisk together the ricotta cheese, eggs, Parmesan cheese, parsley, and 1 cup of the mozzarella cheese. This blend will give our lasagna those lovely creamy layers.

Layering the Lasagna: Spread about 1 and 1/2 cups of spaghetti sauce in the bottom of your greased baking dish. Arrange four lasagna noodles over the sauce, breaking one to fit if necessary. Dollop about 1/3 of the cheese mixture over the noodles and gently spread it out. Layer on another 1 cup of sauce. Repeat the layers of noodles, cheese mixture, and sauce two more times, finishing with a layer of sauce.

Final Touches: Sprinkle the remaining 2 cups of mozzarella cheese over the top for that irresistible golden, bubbly finish we all love.

Bake the Lasagna: Cover the dish with aluminum foil and bake in the preheated oven for 45 minutes. Then, remove the foil and continue baking for another 10 minutes to get that cheese perfectly melted and slightly browned.

Rest and Serve: Once out of the oven, let the lasagna stand for about 10 minutes. This rest time is crucial—it helps the layers set, making it easier to cut into neat squares.