Start by washing the cucumbers thoroughly. Using a mandoline or a sharp knife, slice the cucumbers into thin rounds.
In a large mixing bowl, combine the Greek yogurt, chopped dill, lemon juice, olive oil, garlic powder, salt, and black pepper. Mix well until the ingredients are fully incorporated.
Add the sliced cucumbers to the yogurt dressing and toss gently to coat every slice evenly.
Fold in the thinly sliced red onion and halved cherry tomatoes for added color and crunch. Mix carefully to avoid breaking the cucumber slices.
Chill the salad in the refrigerator for at least 30 minutes to allow the flavors to meld together.
Before serving, give the salad a quick toss and adjust the seasoning if needed.
Notes
Serve in a glass bowl to showcase the vibrant colors and textures. Garnish with whole dill sprigs for freshness.