How do you stuff manicotti?

To stuff manicotti, first cook the pasta until it's slightly underdone. Then, fill a piping bag or plastic bag with the filling mixture, such as a mix of ricotta cheese, herbs, and seasonings. Cut a small hole in the corner of the bag and pipe the filling into the cooked manicotti shells. Place the filled shells in a baking dish, cover with sauce, and bake until heated through.