Step 1

Preheat oven to 400 degrees. Bring a large pot of water to boil. Generously salt water; add noodles and cook according to package directions. Drain, and rinse with cold water. Lay noodles on a baking sheet, separating layers with parchment or waxed paper.

Step 2

In a medium bowl, combine ricotta, parsley, and egg. Season with 1 1/2 teaspoons salt and 1/4 teaspoon pepper.

Step 3

Lightly coat a 9-by-13-inch baking dish with olive oil. Begin layering: Place 4 noodles in dish, slightly overlapping. Top with half the meat sauce and 4 more noodles. Top with half the ricotta filling, then half the mozzarella. Repeat the layering process, ending with the mozzarella. Sprinkle top with Parmesan.

Step 4

Cover with lightly oiled foil. Place on a rimmed baking sheet; bake for 30 minutes. Uncover, and bake until bubbling and browned, 30 to 40 minutes more. Let cool 10 minutes before serving.