Prepare the dressing by combining yogurt or mayonnaise with a pinch of salt in a small mixing bowl. Stir until smooth.

Soak the sliced red onion in a bowl of cold water for about 10 minutes to reduce sharpness.

Cook the pasta in salted boiling water according to package instructions, about 8-10 minutes. Drain and rinse under cold water.

Prepare the cucumbers by halving them, scooping out seeds, and slicing thinly.

In a large salad bowl, combine the cooled pasta, sliced cucumbers, and drained red onion. Toss gently.

Drizzle the dressing over the salad mixture and toss again to coat evenly.

Cover and refrigerate the salad for at least 30 minutes before serving to let flavors develop.