Rinse the spring mix salad greens thoroughly under cold water and dry them well.

In a large salad bowl, combine the dried greens with halved cherry tomatoes, sliced cucumber, and thinly sliced red onion.

Sprinkle crumbled feta cheese and chopped, toasted walnuts or pecans over the salad mixture.

If nuts are not pre-toasted, toast them in a dry skillet over medium heat for 1-2 minutes.

In a small bowl or jar, whisk together balsamic vinegar, honey, and olive oil until well emulsified.

Drizzle the balsamic honey dressing over the salad just before serving and toss gently.