my recipe is simply fry beef with onions, oil and some water, stew in a can of tomatoes, two kinds of beans, green pepper, cumin and crushed chile's. Then I make a whole wheat (or whatever kind) slurry so I don't end up with noodles. I've also put in flax seed powder in my vegetarian version. I heard peanut butter was a secret ingredient...
It's just that the flour adds a bit of a floury flavour, so i was think of going the industrial route of some refined thickening agent. I'll probably try the corn thing but the corn is all gmo...I guess there's a lot of options, like evaporation, which works well. I'll probably try the refried beans or peanut butter idea, for all the extra protein. I like a big blob of chile on my tortilla chips.