Preheat oven to 375 degrees and grab a 9X13 baking dish.
Cook the lasagna noodles in salted water until they're al dente. Drain them and lay them flat on a parchment-lined baking sheet to prevent them from sticking together.
In a large skillet over medium heat, cook the ground beef until fully browned. Drain off any excess grease. Add 1 cup of marinara and season it with ½ teaspoon of kosher salt, ½ teaspoon of black pepper, 2 teaspoons of garlic powder, and 2 teaspoons of onion powder, and combine. Simmer for about 5 minutes. Set the beef mixture aside to cool slightly.
In a large bowl, stir together 15 ounces of ricotta cheese, 1 egg, 1 cup of mozzarella cheese, ½ cup of parmesan cheese, 2 teaspoons of Italian seasoning, and 2 tablespoons of chopped fresh parsley. Mix until it’s all combined and creamy.
Spoon ½ cup of marinara evenly into the bottom of the baking dish. Spread a generous spoonful of the ricotta filling evenly over each lasagna noodle. Spoon the seasoned ground beef over the ricotta layer. Starting from one end, roll each noodle up into a tight spiral, and place the rolls seam-side down in the dish.
Spoon the remaining marinara sauce over the tops of the rollatini and sprinkle the rest of the mozzarella over everything. Cover with foil and bake at 375°F for 25 minutes. Then, uncover and bake for an additional 10 minutes, or until bubbly and golden.
Let the rollatini rest for 5–10 minutes before serving. Sprinkle with extra fresh parsley for a pop of color on top.