Suggestions
You can replace the cavatelli with trofie.
Like all dishes seasoned with creamy sauces, it is essential that the pasta, once seasoned, is not too dry nor too watery.
Keep a little of the pasta cooking water aside.
If while sautéing the seasoned pasta it seems too dry, add a little cooking water one spoonful at a time.
However, if you see too much liquid on the bottom of the pan, let it evaporate for a few seconds over a high heat, stirring continuously.
If you prefer instead of mascarpone you can use cooking cream, if instead you want to reduce the amount of fat you can use fresh ricotta.
It is recommended to add some grated cheese.