In a large serving bowl combine romaine lettuce and spinach. Gently mix in sliced pear, blackberries, purple onion, parmesan cheese, fresh basil, and optional thinly sliced lemon. Sprinkle pistachios over salad. Top with lemon vinaigrette when ready to serve.
6 cups romaine lettuce , 2-3 cups spring mix, 1 pear, 6 oz blackberries , ⅛ red onion, ⅓ cup parmesan cheese, ⅓ cup pistachios, optional, 2 Tablespoons each of grated Asiago and Pecorino cheese.