Wash and thoroughly dry the mixed greens using a salad spinner or clean kitchen towels. Wet greens prevent proper dressing adhesion.

Slice the apple thinly just before assembling to prevent browning. Keep slices uniform for even distribution.

Optional but highly recommended: Lightly toast walnuts in a dry skillet over medium heat for 3-4 minutes until fragrant, stirring frequently. This enhances their nutty flavor.

In a small bowl, whisk together maple syrup, olive oil, apple cider vinegar, Dijon mustard, salt, and pepper vigorously for about 30 seconds until smooth and emulsified. The dressing should look creamy and slightly thickened.

In a large salad bowl, gently combine the greens, apple slices, walnuts, cranberries, and feta cheese (if using).

Drizzle about half the dressing over the salad while tossing gently to coat evenly. Add more dressing to taste, reserving any extra for later use.

Serve immediately for best texture and flavor.