Years (and years) ago, while in high school, I worked at McDonald's when they first came out with these wonderful creations. After all this time, I still love to make and eat them. I think they have changed it over the years for the dollar menu but this is the ORIGINAL recipe. Sometimes when I don't have fresh tomatoes I substitute a little salsa or some drained Rotel tomatoes taste the best. If you go with the Rotel option, you can omit the diced green chilies that are called for in the recipe.