Whisk together Greek yogurt, lemon juice, olive oil, minced garlic, salt, and pepper in a medium bowl until completely smooth. I do this with a fork because it takes thirty seconds and prevents lumps that hide in the dressing, which defeats the entire texture game.
Stir the mint and dill into the dressing thoroughly, letting the herbs release their oils for one full minute. This step feels slow, but those sixty seconds transform dried-out herbs into something bright enough to notice. Most recipes skip this, which is why their salads taste flat.
Slice cucumbers into thin, uniform rounds—aim for roughly 1/8-inch thickness. I learned this the hard way after Lily complained about chunks; thin slices distribute the dressing evenly and chill faster than uneven cuts.
Place sliced cucumbers and red onion into a colander and let them sit for two minutes. This removes excess surface water before dressing, which prevents the salad from becoming watery by dinner. Skip this and you'll have soup by hour three.
Transfer drained vegetables to a large bowl and pour the finished dressing over top, folding gently to coat every piece. This is where the texture magic happens—the yogurt coating protects each slice from weeping out liquid.
Fold in cherry tomatoes and feta cheese carefully using a rubber spatula, just three or four turns maximum. Overmixing bruises the tomatoes and crumbles the feta into dust, which kills the visual appeal and mouthfeel.
Refrigerate for at least fifteen minutes before serving, though thirty minutes is ideal. Cold temperature makes the flavors settle and creates that perfect contrast between cold dressing and crisp cucumber that makes this the easy cucumber salad kids actually request.