Spinach Salad with Capers Vinaigrette

This salad combines all the things that are key in a salad: great greens, crunchy croutons for good texture, colour notes with the white mozzarella and red onions, plus a delicious punchy capers vinaigrette to dress it all up. If you already have homemade croutons in hand, it just takes 5 minutes to put together!