1 pound cavatappi, corkscrew pasta, or medium shells
1 cup prepared pesto sauce from refrigerated case in supermarket
1 lemon, juiced and zested
1/4 cup chopped flat-leaf parsley
1 cup grape tomatoes, halved
4 scallions, chopped
Bring a large pot of water to a boil and salt it.
Place pesto, lemon zest, lemon juice, parsley, tomatoes, scallions and cheese in a large bowl.
Cook pasta to al dente then cold shock it and chill it down under cold running water. Drain well. Add to mixing bowl. Combine salad and season with salt and pepper, to taste.