How to Make It
Preheat the oven to 375°. On a large rimmed baking sheet, toss the bread cubes with 2 tablespoons of the olive oil; spread in an even layer and season lightly with salt. Bake the baguette cubes for about 15 minutes, until golden brown and crisp.
Meanwhile, in a blender, combine the egg yolk, anchovy fillets, garlic, vinegar, lemon juice and cayenne and puree. With the machine on, slowly add the remaining 1/2 cup of olive oil and blend until incorporated. Season with salt.
In a large bowl, toss the romaine with the croutons, dressing and cheese, and serve.