Easy Way

1. Whisk to blend: Whisk all the ingredients in a small bowl until creamy. Done!

OR: With Finesse

1. Dissolve the salt and sugar in the lemon juice: Whisk the lemon juice, sugar, salt, black pepper, and minced garlic in a small bowl until the salt and sugar dissolve, about 10 seconds.
2. Add the oil: Add the oil and whisk until combined.
3. Add the mayonnaise: Add the mayonnaise and whisk until creamy.
4. Add the cheese: Add the grated parmesan, and stir to combine.
5. Serve: Just before serving, whisk the dressing again to bring it back together. Toss the lettuce with the dressing. Sprinkle the extra parmesan on top of the bowl of salad (family style), or on the salad when serving (individual plates).