Can I make the pesto ahead of time?
Yes, make pesto up to 3 days ahead and refrigerate in an airtight container. Add a thin layer of olive oil on top to prevent browning.
How do I keep the pasta from getting mushy?
Cook fusilli to al dente (slightly firm), drain well, and toss immediately with olive oil to stop carryover cooking before adding pesto.
Can I use store-bought pesto?
Yes, use about 3/4 cup store-bought pesto as a shortcut, though fresh basil pesto will have brighter flavor.
Is this salad gluten-free?
Use gluten-free fusilli pasta and verify all other ingredients for certification if needed; prosciutto, basil, and cheese are naturally gluten-free.
How long can I store leftovers?
Refrigerate in an airtight container for up to 3 days; add a squeeze of fresh lemon juice before serving to refresh flavors.