I had intended to come here and post a reply to a recipe I'd based my own off of, but I can't find it now. So I'll enter my own version as a separate recipe. I melded this from a recipe here that said it was a copycat of a restaurant's recipe, and one from another site that was for crock pot tortilla soup. I use a whole onion because I like onion, but it IS a lot. And frankly I guesstimate the spices. But it's delicious. And, I think, fairly healthy. This is also very easy, and I make it a lot. It doesn't have many ingredients, it just cooks in a crock pot, and it's great for lunches all week (which is why I make it).