In a medium bowl, combine extra virgin olive oil, lemon juice and zest, honey, and a pinch of salt and pepper. Whisk vigorously until fully emulsified and smooth.

Chop Romaine lettuce into bite-sized pieces and add to a large salad bowl.

Thinly slice red onion and scatter over the chopped Romaine, then grate Parmesan cheese and sprinkle on top. Add crushed red pepper flakes.

Drizzle the prepared dressing over the salad and toss gently to coat everything well.

Serve immediately to maintain crispness, ensuring each bowl has a delightful mix of the ingredients.