In a large bowl, combine the thawed peas, diced cheddar cheese, chopped celery, chopped red bell pepper, and finely chopped red onion.
In a small bowl, whisk together the mayonnaise, sour cream, apple cider vinegar, sugar, salt, and black pepper until smooth and well combined.
Pour the dressing over the pea and vegetable mixture, gently tossing to coat all ingredients evenly.
Refrigerate for at least an hour before serving to allow the flavors to meld together.
Give the salad a gentle stir before serving. Enjoy!
Variations & Tips
For those who prefer a milder flavor, you can substitute green onions for the red onions. If you have a picky eater, consider adding some diced ham or crispy bacon bits for extra protein and flavor. You can also swap out the cheddar for a milder cheese like mozzarella or Monterey Jack. For a healthier twist, use Greek yogurt instead of sour cream, and consider adding some chopped fresh herbs, like parsley or dill, for a fresh burst of flavor.