Preheat your oven to 350°F (175°C) and grab a 9x13-inch baking dish.

Bring a large pot of salted water to a boil and carefully add the manicotti shells. Cook for 3-4 minutes until pliable, then drain and rinse with cold water.

In a large skillet over medium heat, add the ground beef and season with kosher salt and black pepper. Cook for 6-8 minutes until browned. Stir in 2 cups of marinara sauce and simmer for 5 minutes.

Spread 1/2 cup of the meat sauce evenly across the bottom of the prepared baking dish.

In a mixing bowl, combine ricotta cheese, cream cheese, Parmesan, and 2 cups of mozzarella. Add the egg, garlic, Italian seasoning, and dried basil. Mix until well combined.

Using a piping bag or spoon, fill each manicotti shell with the cheese mixture. Place the filled shells upright in the baking dish.

Pour the remaining meat sauce over the filled manicotti shells and cover with aluminum foil. Bake for 40 minutes.

After 40 minutes, remove the foil and add the remaining mozzarella. Bake for an additional 10 minutes until bubbly and golden.

Let the Million Dollar Manicotti rest for 5 minutes before serving.