Peel and boil the potatoes in salted water until they are completely tender – about 20 minutes. Drain them, then mash with a potato masher until you have a smooth purée.
Add the butter, half of the grated Parmesan, salt, pepper, and nutmeg to the hot potatoes. Mix well until the mixture is creamy and smooth. If it's too thick, add a little cream.
Fill the cannelloni tubes with the potato mixture – you can use a piping bag or a small spoon. Fill all 12 tubes, then place them side by side in a buttered baking dish.
In a small saucepan, heat the heavy cream, then pour it over the filled cannelloni. This helps keep the pasta moist during baking.
Sprinkle the remaining grated Parmesan over the top. This will bake into a golden brown, crispy crust.
Place the baking dish in a preheated oven at 350°F (180°C) for about 30 minutes, until the top is golden brown and the cream is bubbling. If it browns too quickly, cover it with aluminum foil.
Once you've taken it out of the oven, let it rest for 5-10 minutes to allow the flavors to meld and make it easier to slice.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.