Make the Filling: In a mixing bowl, combine the ricotta, half the mozzarella, Parmesan cheese, and beaten egg. Season with salt and pepper to taste. Mix well to create your cheese filling.
Assemble Rolls: Lay out the cooked lasagna sheets on a clean surface. Spread a generous amount of Bolognese sauce on each sheet, then top with the cheese mixture. Carefully roll the sheets from one end to the other.
Arrange in Baking Dish: Preheat oven to 375°F (190°C). Spread a thin layer of Bolognese sauce on the bottom of a baking dish. Place the rolls, seam side down, on the dish. Pour the remaining Bolognese sauce over the top and sprinkle with the remaining mozzarella.
Bake: Cover the dish with foil and bake for 25 minutes. Remove the foil and bake for an additional 10 minutes, or until the cheese is golden brown and bubbly.
Garnish and Serve: Sprinkle chopped parsley over the cooked rolls before serving. Enjoy these delicious cheese roll-ups with salad or garlic bread for a complete meal.
Prep Time: 20 minutes | Cook Time: 35 minutes | Servings: 6
