Start by washing all your produce thoroughly. Chop the apples into bite-sized pieces, slice the celery thinly, and halve the grapes. Keeping the pieces uniform ensures every bite tastes balanced and looks appealing.
Place walnuts or pecans in a dry skillet or oven and toast until lightly golden and fragrant. This step enhances their flavor and adds a richer crunch. Allow them to cool before adding to the salad.
In a small bowl, whisk together Greek yogurt, mayonnaise, lemon juice, honey, salt, and pepper. Mix until smooth and creamy. The lemon adds brightness while the yogurt keeps the dressing fresh and slightly tangy.
In a large bowl, add apples, grapes, celery, parsley, and toasted nuts. Pour the dressing over the mixture and gently fold everything together. Make sure all ingredients are evenly coated without crushing the fruit.
You can serve the salad immediately, but I personally prefer chilling it for 20–30 minutes. This allows the flavors to blend beautifully. Garnish with extra parsley and celery leaves before serving.