01 - In a large mixing bowl, toss together the shredded green cabbage, red cabbage, carrots, sliced bell pepper, green onions, and chopped cilantro if using.
02 - In a separate small bowl, whisk the mayonnaise, Greek yogurt, apple cider vinegar, honey, and Dijon mustard until smooth and well blended. Season with salt and black pepper to taste.
03 - Pour the dressing over the vegetable mixture and toss thoroughly using salad tongs or two large spoons until every strand is evenly coated.
04 - Taste the slaw and adjust salt, pepper, or vinegar as needed to balance the flavors.
05 - Serve immediately at room temperature, or cover and refrigerate for 30 minutes to allow the flavors to meld before serving.