01 -
Arrange a rack in the center of the oven and heat to 375°F. Lightly grease a 9x13-inch baking dish, then spread 1 cup of marinara or meat sauce over the bottom.
02 -
Boil the lasagna noodles in salted water until flexible and just shy of al dente, usually 1 minute less than the package directions. Drain and lay them flat on parchment or a lightly oiled sheet pan.
03 -
Heat olive oil in a large skillet over medium-high heat. Cook the onion for 3-4 minutes, then add garlic for 30 seconds. Add ground beef, Italian seasoning, 1/2 teaspoon salt, and pepper. Cook until browned and no longer pink, 6-8 minutes.
04 -
Stir the marinara into the beef mixture and simmer for 5 minutes. Taste and adjust seasoning if needed, then remove from the heat.
05 -
In a bowl, stir together ricotta, egg, 1/4 cup Parmesan, 1 cup mozzarella, parsley, and the remaining 1/2 teaspoon salt until evenly combined.
06 -
Spread about 3 tablespoons of ricotta filling over each noodle. Add 1 tablespoon of meat sauce, then roll from the short end. Set each roll seam-side down in the prepared baking dish.
07 -
Spoon the remaining meat sauce over the rolls. Sprinkle with the remaining 1 cup mozzarella and 1/4 cup Parmesan. Cover with foil and bake for 20 minutes, then uncover and bake 10-15 minutes more until bubbling and lightly browned.
08 -
Let the pan rest for 10 minutes before serving. Sprinkle with extra parsley and spoon sauce from the pan over each roll.