To make this smashed cucumber salad, start by making the dressing. Add the olive oil, honey, rice vinegar, lemon juice, dijon mustard, garlic, salt, and pepper to a small blender.
Blend until smooth, then taste and adjust the seasoning as needed. Set the dressing aside.
Next, cut the Persian cucumbers into 1-inch coins. Using the palm of your hand or the bottom of a cup, smash each coin until it cracks and flattens slightly.
Once all the cucumbers are smashed, use a paper towel to press out as much excess moisture as you can — this step keeps your salad from getting watery, especially if you're not serving it right away.
Transfer the smashed cucumbers to a large bowl, then add the diced avocado, green onions, feta, dill, and chives.
Pour the dressing over everything and toss gently to combine. Serve right away for the best texture and crunch.