Preheat your oven to 375°F and grease a 9x13 baking dish.

Brown the ground beef in a large skillet over medium heat, breaking it up as it cooks. Drain excess fat, then stir in marinara sauce, garlic powder, Italian seasoning, salt, and pepper. Simmer for 5 minutes.

In a bowl, mix together ricotta, egg, Parmesan, parsley, salt, and pepper until well combined.

Spread a thin layer of meat sauce on the bottom of your prepared dish.

Layer 3 lasagna noodles over the sauce, then spread half the ricotta mixture, followed by one-third of the remaining meat sauce, and a generous handful of mozzarella.

Repeat the layers — noodles, remaining ricotta, meat sauce, mozzarella — then finish with the last 3 noodles, the rest of the meat sauce, and a final crown of mozzarella and Parmesan.

Cover tightly with foil and bake for 40 minutes. Remove foil and bake another 15 minutes until the cheese is golden and bubbling.

Let it rest for 10–15 minutes before slicing.