Step 1: Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package directions until al dente. Drain the pasta and rinse it with cold water to stop the cooking process. This ensures the pasta doesn't become mushy.
Step 2: Prepare the Dressing: In a large bowl, whisk together the mayonnaise, sour cream, white vinegar, sugar, salt, and pepper until smooth. Ensure the sugar and salt are fully dissolved for an even flavor distribution.
Step 3: Combine Ingredients: Add the cooked pasta, cheddar cheese, cherry tomatoes, cucumber, green bell pepper, black olives, and red onion (if using) to the bowl with the dressing. Gently toss all ingredients together until the pasta and vegetables are evenly coated with the dressing.
Step 4: Chill and Serve: Cover the bowl with plastic wrap and refrigerate for at least 30 minutes before serving. This allows the flavors to meld and the salad to chill, enhancing its overall taste. Serve cold and enjoy.
Optional tips: For a tangier flavor, add a tablespoon of Dijon mustard to the dressing. To customize the vegetables, consider adding broccoli florets, carrots, or celery. If you prefer a lighter dressing, substitute plain Greek yogurt for some of the mayonnaise or sour cream.