You can use Greek yogurt or sour cream in place of some (or all) of the mayo. You may want more dressing depending on how saucy you want it. You can increase the dressing, just keep the ratio the same for the vinegar and sugar. The original recipe called for 1 bottle of coleslaw dressing plus 1-2 c mayonnaise. It was very good but VERY high in calories. This version is healthier and still very good! In my family, we debate whether this or the Perfect Pasta Salad is better. I prefer a savory pasta salad, but this one IS really good. I like to serve this with a fresh roll and some fruit. Enjoy!