How to Make It
Line a baking sheet with parchment paper and lightly coat the parchment with cooking spray. In a nonstick skillet, combine the pine nuts with 2 tablespoons of the honey. Cook over moderately high heat, stirring, until the nuts are golden and coated with honey, 4 minutes. Pour the nuts and honey onto the baking sheet. Using a spatula, spread the nuts in an even layer; let cool.
In a bowl, whisk the remaining 2 teaspoons of honey with the vinegar and the mustards. Gradually whisk in the oil; season with salt and pepper. In a bowl, toss the arugula with the endives and blue cheese. Break the honeyed pine nuts into small pieces and add them to the salad. Add the dressing, toss to coat and serve at once.