Can I make the pesto ahead of time?
Yes. Make pesto up to 1 day ahead and store in an airtight container in the refrigerator. Add a thin layer of olive oil on top to prevent browning. Toss with hot pasta just before serving.
What can I use instead of pine nuts?
Walnuts, almonds, or sunflower seeds work well. Toast them lightly first. Pine nuts are traditional but optional if you have allergies or prefer a different flavor.
Can I substitute the trofie pasta?
Any short, textured pasta works—try fusilli, orecchiette, or penne. Trofie's spiral shape is ideal for trapping pesto, but other shapes will still be delicious.
How do I know when the pine nuts are toasted enough?
Toast until fragrant and lightly golden, about 3–4 minutes over medium heat, stirring occasionally. Watch carefully—they burn quickly.
Should I cook the pasta al dente for this dish?
Yes. Cook trofie until just tender with a slight bite. Overcooked pasta will become mushy when tossed with warm pesto.