What are some creative ways to fill and bake cannelloni tubes for a delicious and satisfying meal?

One creative way to fill and bake cannelloni tubes is to mix ricotta cheese with spinach and seasonings, then use a piping bag to fill the tubes. Another idea is to stuff the tubes with a mixture of ground meat, vegetables, and cheese. You can also try filling the tubes with a creamy mushroom and chicken mixture for a flavorful twist.