Core and dice the honeycrisp apples into bite-sized pieces.
To prevent browning, using a small bowl, toss them with a splash of lemon juice or apple cider vinegar.
Thinly slice the celery and halve the grapes.
Toast the pecans in a dry skillet, over medium heat, for 3 – 5 minutes, stirring frequently, until fragrant.
Remove from the heat and allow the pecans to cool before adding to the salad.