Prepare Ingredients: Gather all your ingredients. Make sure the egg yolks are at room temperature to help with emulsification.
Blend Base Ingredients: In a food processor or blender, add the anchovies, egg yolks, garlic cloves, and lemon juice. Pulse until the mixture is smooth and creamy.
Incorporate Dijon Mustard and Olive Oil: Add the Dijon mustard. With the food processor running, slowly drizzle in the olive oil. This will help emulsify the dressing and create a silky texture.
Add Parmesan Cheese: Finally, add the freshly grated parmesan cheese. Pulse again until the dressing is fully combined and smooth.
Adjust Flavor: Taste the dressing and adjust as needed. Add a pinch of salt, a bit more lemon juice, or more parmesan to suit your preference.
Store and Serve: Transfer the dressing to an airtight container and refrigerate. Serve over crisp romaine lettuce, croutons, and a sprinkle of extra parmesan.