Preheat your oven to 350˚F. Cook your manicotti as per the packages instructions.
In a medium bowl mix together 3 cups mozzarella, ricotta, parmesan, garlic, egg and basil. Spoon the mixture into your cooked manicotti shells.
Spread half of the pasta sauce across the bottom of your baking dish, next place the stuffed shells on top of the sauce. Pour the remaining sauce over the stuffed shells and top with remaining mozzarella cheese.
Bake for about 25 to 39 minutes until the mozzarella is completely melted.