Ingredients
Method
Step-by-Step
- Whisk olive oil, lemon juice, kosher salt, black pepper, and garlic powder together. Coat the chicken breasts and let them stand for 10–15 minutes.
- Heat an outdoor grill or grill pan to medium-high, approximately 400–425°F. Grill the chicken for 5–8 minutes per side, depending on thickness, until the center reaches 165°F.
- Transfer the chicken to a plate, tent loosely with foil, and let it rest for 5 minutes. Dice or finely chop the chicken once the juices have settled.
- Whisk mayonnaise, Greek yogurt or sour cream, Dijon mustard, lemon juice, kosher salt, and black pepper in a bowl. Stir in celery, red onion, herbs, and chopped grilled chicken.
- Fold in optional grapes, nuts, or sweet pickle relish if using. Refrigerate the chicken salad for 20–30 minutes so the flavors can develop.
- Cut the cucumbers into pieces about 1 1/4–1 1/2 inches long. Scoop out the seeded center with a small melon baller or teaspoon, leaving about 1/4 inch of cucumber at the bottom and sides, then spoon approximately 1 tablespoon of chicken salad into each cup.
Notes
Do not hollow the cucumber pieces all the way through, or the filling may leak. Leave the cucumber unsalted to avoid drawing out excess moisture, chill the chicken salad before filling, and assemble close to serving time. For especially juicy chicken, pound the breasts to an even thickness before grilling.
