I make this frequently AS WRITTEN. I also use leftover chicken and turkey, usually because I made extra just for this recipe. It is one of my favorites. No need to add starch, just mash some of the beans to thicken if that is desired. I also enjoy it with lime (glad I tried that!) and cheddar cheese. I wish people would not make their own adjustments and then criticize the results as if the recipe is not a good one.