Cook the Pasta: Start by cooking the pasta according to package directions until al dente. Drain and rinse with cold water to cool the pasta down, then set aside.

Prepare the Dressing: In a large mixing bowl, whisk together the mayonnaise, granulated sugar, apple cider vinegar, salt, and pepper until smooth and well combined.

Combine Ingredients: In a large salad bowl, combine the cooled pasta, coleslaw mix, diced red onion, and sliced cucumber.

Toss with Dressing: Pour the prepared dressing over the pasta and vegetable mixture. Toss everything together until well coated. Make sure all ingredients are evenly distributed.

Chill: Cover and refrigerate for at least 1 hour to allow flavors to meld. This salad is best served cold.

Serve: Give the salad a quick stir before serving, and adjust seasoning if necessary. Enjoy as a side to grilled meats or as a refreshing stand-alone dish.