1
Preheat the oven to 350°F.
2
Coat the peeled garlic cloves in oil, wrap in foil and roast for about 20-30 minutes, until caramelized.
3
Toss the bread cubes with the olive oil, minced garlic, salt and pepper on a baking sheet. Toast until crispy, 8-10 minutes. Cool.
4
Add the roasted garlic, lemon juice, anchovies, mustard, vinegar, mayo, Worcestershire sauce, and parmesan to a blender, food processor, or immersion blender. Blend until smooth. As the mixture is blending, slowly add the oil to emulsify. Season to taste.
5
Toss the romaine with the dressing and croutons in a large bowl. Garnish with Parmigiano-Reggiano.