For the best crunch, keep the vegetables and dressing stored separately if you are making this salad for meal prep, then toss just before eating. You can add grilled chicken, shrimp, or steak on top to turn this into a more substantial high-protein keto meal without significantly increasing the carbs. If you are very carb-sensitive, slightly reduce the cherry tomatoes and red onion to lower the net carbs further. This salad keeps well in the refrigerator for up to 3 days when stored in an airtight container with the dressing on the side.