Cook the 116 oz. package couscous according to package instructions. Transfer the cooked couscous to a large bowl, fluff with a fork, and let it cool slightly (about 10–15 minutes) until not piping hot.
Prepare the salad ingredients: halve the 2 cups grape tomatoes; drain and chop the 2 cups jarred artichoke hearts (drained and chopped); ensure the 1 1/2 cups kalamata olives have their pits removed and are chopped as needed; chop the 1/2 cup fresh basil.
Add the halved tomatoes, drained chopped artichoke hearts, chopped kalamata olives, and the 1/2 cup chopped fresh basil to the cooled couscous. Toss gently to combine.
Make the dressing: in a small bowl whisk together 1/2 cup olive oil, the juice of 2 large lemons, 3 cloves garlic (minced), 2 teaspoons chopped fresh oregano, and 1 tablespoon chopped fresh basil. Season the dressing with salt and pepper to taste.
Pour the dressing over the couscous mixture and toss until everything is evenly coated. Taste and adjust salt and pepper if desired.
Serve immediately or refrigerate. This salad makes a large amount—you can cut the recipe in half if needed—and will keep in the refrigerator for up to 3 days.
Notes
Makes a large amount — can be halved; stores in the refrigerator up to 3 days.