A winner at potlucks and picnics and all summer long, this farfalle pasta salad features chickpeas, crisp green beans, sharp red onion, basil, and salty capers in a delicate, creamy mayo-based dressing with lemony undertones.
Using the side of a chef's knife, mash garlic with 1 teaspoon salt into a paste. Transfer to a small bowl; whisk in lemon juice, vinegar, oregano, and mayonnaise. Stir in 1/4 teaspoon each salt and pepper.
Cook pasta in generously salted water according to package directions until cooked all the way through. Drain (but don't rinse, which would waterlog the noodles), then spread on a rimmed baking sheet. Let cool completely, about 20 minutes.
Meanwhile, in a large bowl, toss green beans, onions, capers and brine, and chickpeas with vinaigrette. Add pasta; toss to combine. Season with salt and pepper. Refrigerate up to a day ahead; let stand at room temperature at least 30 minutes before serving. (Cold pasta salad is too firm and less flavorful.) Toss with Parmigiano-Reggiano and basil; serve.
Be sure to boil the noodles for the longest cooking time listed on the package, since they won't continue to cook in piping-hot sauce as they would in warm dishes.