- 1 tablespoon olive oil
- 1 cup hazelnuts, coarsely chopped
- Kosher salt
- 1 small garlic clove
- 2 tablespoons red wine vinegar
- 1 tablespoon Dijon mustard
- Freshly ground black pepper
- 1/2 cup extra-virgin olive oil
- 2 heads of escarole (about 2 1/2 pounds), tough outer greens removed, leaves torn into bite-sized pieces
- 2 Comice or Anjou pears, preferably red, cored, thinly sliced lengthwise
- 1/2 pound Parmesan, shaved
- 2 cups (packed) basil leaves, torn into bite-sized pieces
- Flaky sea salt
- Heat 1 Tbsp. olive oil in a small skillet over medium. Add hazelnuts and toast, stirring occasionally, until golden, 2–3 minutes. Season with 1/8 tsp. kosher salt. Remove from heat; set aside.
- Finely chop garlic clove. Using the side of a chef's knife, mash garlic with 1/4 tsp. kosher salt to form a paste. Whisk garlic paste, vinegar, mustard, and 1/4 tsp. pepper in a medium bowl. Whisk in 1/2 cup extra-virgin olive oil in a slow and steady stream.
- Place escarole, pears, Parmesan, basil, and about 1/3 of the reserved hazelnuts in a large bowl and drizzle with vinaigrette. Gently toss until salad is evenly dressed; season with sea salt and pepper. Top with remaining hazelnuts.
- The dressing can be made up to 1 day ahead. Whisk well before using.