In a large salad bowl, combine the fresh baby spinach, sliced strawberries, cucumber rounds, and thinly sliced red onion, tossing lightly to mix the ingredients evenly.
In a separate small bowl, whisk together the plain yogurt, honey, apple cider vinegar, poppy seeds, and Dijon mustard until thoroughly blended. Season the mixture with salt and pepper to your preference, mixing well to incorporate.
Drizzle the prepared poppy seed dressing gently over the salad, then use tongs or a large spoon to toss the salad lightly, ensuring that the greens and fruits are evenly coated with the dressing.
Finish by sprinkling the crumbled feta cheese and toasted nuts over the top of the salad, adding a delightful texture and flavor contrast.
Serve the salad immediately for optimal freshness, or for enhanced flavors, chill in the refrigerator for up to 30 minutes before serving.
Notes
Serve in a wide, shallow bowl and garnish with whole strawberries and edible flowers for presentation.