Prepare the Salad Base: Wash and dry the romaine lettuce thoroughly. Tear it into bite-sized pieces and place it in a large mixing bowl.
Add Fresh Herbs: Finely chop the parsley and green onions, then sprinkle them over the lettuce.
Make the Dressing: In a small bowl, whisk together lemon juice, red wine vinegar, Dijon mustard, olive oil, salt, and pepper. Adjust the seasoning to taste.
Combine: Pour the dressing over the lettuce and toss gently until everything is evenly coated.
Finish: Sprinkle the grated Parmesan cheese over the salad and toss again for a light, cheesy finish.
Serve: Serve immediately as a refreshing side dish or enjoy it on its own!