The comfort food dish that may be able to top lasagna. Definitely, a dish that isn't cooked often enough.
Turn the heat off and wait just a few minutes for the mixture to cool down before you stir the egg yolks through so that they won't scramble.
Next, use a piping bag or if you don't have one just use a teaspoon to fill your cannelloni tubes with the minced meat (pro tip: stand your cannelloni tubes up when filling them, I see many people trying to fill it while laying the tubes down).