Wash the cucumbers and strawberries thoroughly. Slice the cucumbers into thin half-moons and hull the strawberries before quartering them into bite-sized pieces. Thinly slice the red onion and chop fresh mint leaves. Arrange in a large mixing bowl.

In a medium bowl, whisk together Greek yogurt, apple cider vinegar, and honey to achieve a smooth blend. Add salt and black pepper to taste. Gradually sprinkle in olive oil while whisking to emulsify the dressing until creamy.

Gently toss the cucumbers, strawberries, sliced red onion, crumbled feta, and chopped mint in the mixing bowl. Add a pinch of red pepper flakes for warmth. Mix everything lightly, ensuring even distribution.

Pour the creamy dressing over the salad components. Toss gently to coat without breaking the strawberries or feta. Serve immediately to preserve crispness.