Bring a large pot of water (4 to 5 quarts) to a boil over high heat.
Once the water has reached a rapid boil, add salt. Bring water back to a boil, add pasta, and cook according to package directions.
When pasta is ready, reserve about ½ cup of pasta water and drain the rest. Return pasta to the pot.
Remove pot from heat and add pesto sauce along with ¼ cup of pasta water, stirring until the sauce is creamy and all the flavors are well incorporated; add more pasta water if needed to improve consistency.
Transfer to a platter or portion onto individual plates.
Sprinkle with toasted pine nuts if desired.
Buon appetito and SHARE THE PASTA!!
Recipe for Chef Rosario's homemade pesto.
National Pasta Association Recipe