Creating your Apple and Bitter Greens Salad is straightforward with these step-by-step instructions:

1. Prepare the Greens: Rinse the bitter greens thoroughly under cold water. Drain and pat them dry with a clean kitchen towel or a salad spinner.
2. Slice the Apples: Core and slice the apples into thin wedges. You can leave the skin on for added texture and color.
3. Toast the Walnuts: In a dry skillet over medium heat, toast the walnuts for about 5 minutes, stirring frequently until golden and fragrant. Remove from heat and let cool.
4. Mix the Dressing: In a small bowl, whisk together the olive oil, apple cider vinegar, honey, salt, and pepper until well combined.
5. Combine Ingredients: In a large salad bowl, add the bitter greens, apple slices, toasted walnuts, feta cheese (if using), and red onion.
6. Dress the Salad: Drizzle the dressing over the salad. Toss gently to combine, ensuring the greens and apples are well coated.
7. Chill (Optional): If desired, let the salad chill in the refrigerator for 10 minutes to allow the flavors to meld.
8. Serve: Transfer the salad to individual serving plates or bowls and enjoy immediately.

These steps will guide you in creating a fresh and vibrant Apple and Bitter Greens Salad that is sure to impress!