Any spicy green and mild cheese can be substituted with great success. Very easy but VERY tasty. The dressing is simple so use the best and freshest greens and cheese you can find- I have even used locally produced sheep, goat and cow cheeses- just keep it similar in flavor- like a good queso fresco- thanks cg for the suggestion! The secret is the spicy green with the mild cheese. Keep those two in mind when choosing any substitution. Amazing little salad based on a Whole Foods Recipe. Posted for World Tour 2005.