Caesar Salad with Roasted Onion, Preserved Lemon, and Bacon

 

1 medium red onion, quartered

1 tablespoon extra-virgin olive oil

4 thick slices nitrate-free bacon

4 (l-inch) slices artisanal bread, cut into 1-inch cubes

4 tablespoons unsalted butter, melted

4 small heads assorted garden lettuce (about 1/2 pound lettuce leaves total), roughly chopped

2 cups shaved Parmesan cheese

1 cup loosely packed microgreens or small, soft herbs (such as parsley or chervil)

1 teaspoon finely chopped preserved lemon

DRESSING

1 egg

3 oil- or brine-packed anchovy fillets

1 1//2 teaspoons Dijon mustard

1//4 cup fresh herb leaves (such as a mixture of parsley, chives, tarragon, and basil)

1 garlic clove, peeled and smashed

1//4 cup champagne vinegar

2 tablespoons shredded Parmesan cheese

1/2 teaspoon Worcestershire sauce

Juice of 1/2 small lemon (about 1 tablespoon)

Salt

Freshly ground black pepper

2/3 cup extra-virgin olive oil

 

Make the salad: Preheat the oven to 35O°F. Place the onion quarters in a small casserole dish, coat with the oil, and roast for 30 minutes, or until soft. Set aside to cool. While the onion roasts, heat a large pan over medium heat. When hot, add the bacon and cook until crisp, about 10 minutes, turning occasionally. Set the bacon aside to drain on a paper towel-lined plate. Increase the oven temperature to 4OO°F. Place the bread cubes in a large bowl, drizzle the butter on top, and mix (hands work best) until the bread is evenly coated. Transfer the bread to a baking sheet and toast for 10 to 15 minutes, turning once or twice, until golden brown on all sides. Set aside to cool. Make the dressing: While the bread toasts, place the egg in a small bowl, add boiling water to cover (just about a cup), and let stand for 10 minutes. (This is called coddling the egg; it cooks most of the white outside but not the yolk.) Gently break open the egg and pour the liquid parts into a blender or food processor, discarding the cooked parts. Add the anchovies, mustard, herbs, garlic, vinegar, shredded Parmesan, Worcestershire, lemon juice, and salt and pepper to taste, and blend well. With the machine running, add the oil in a slow, steady stream, blending until completely smooth.  Place the lettuces in a large mixing bowl. Slice and add the onion, then crumble and add the bacon. Add the croutons, shaved Parmesan, microgreens, and preserved lemon. Just before serving, toss the salad with just enough dressing to coat the leaves evenly.