I sauteed half a chopped onion with cayenne pepper and chili spice (what's that called?). I added my ground beef and cooked it and then drained it. While it was draining, I threw my romaine lettuce in the cast iron skillet to get wilty and some flavor.
I then made a bed of lettuce, added the meat, the guacamole, and grated some Colby Jack cheese on top. I added a spritz of red wine vinegar and olive oil, and it was finished. Super easy, and lots of good nutrients. :)