How to Make It
In a small bowl, whisk the olive oil with the apple cider vinegar and whole-grain mustard. Season with salt and pepper.
In a large nonstick skillet, cook the bacon slices over moderate heat, turning, until golden and crisp, about 5 minutes. Transfer to a paper towel–lined plate to drain. Break the bacon into pieces.
In the same skillet, melt the butter. Add the apple and cook over moderate heat until lightly golden, 3 to 4 minutes. Stir in the hazelnuts and cook until deep golden, 1 to 2 minutes. Let cool slightly.
Arrange the greens on a platter. Top with the apple, hazelnuts, cheese, grapes, figs and bacon. Drizzle with the vinaigrette and serve.