My lunch was hamburger and onions. I know, not keto, but I had to feed 6 people with only one pound of hamburger thawed out.

* Smash 1lb hamburger into bottom of hot cast iron chicken fryer, put on high gas flame with lid on.

* Sear and cook on one side, then flip and salt cooked side liberally. Tip lid and reduce to medium heat. Cook until moisture pools around hamburger.

* Peel two softball sized onions, halve both and slice horizontally into 1/4" half-rings

* Remove hamburger to plate and drop onions in pot where hamburger was cooked. Cook on high covered until soft, stirring four times per minute.

* Reduce heat to medium until onions are lightly caramelized and translucent. Transfer to bowl.

* slice 1/2lb of cheddar or other cheese of choice into 1/4" slices, layer all cheese over hot onions

* place hamburger back into pot seared-side-up at medium to sear other side for a couple minutes, then place hamburger newly-hot-side down on top of cheese which is melting over onions.

No additional seasoning required: hamburger, onions, cheese and salt are only ingredients. It's kind if like French onion soup without the broth.

The kids went crazy, even the ones that say they don't like onions.