Replace the potatoes in a corned beef hash with something that isn't starchy?
Cauliflower might work.  I've put cauliflower in a food processor to get it to a uniform small-ish size, and then stir-fried it until soft, as a low-carb substitute for rice.  Maybe you could dice it into small pieces and do the same.  Boiling or steaming instead of stir-frying may give you a softer potato-like texture.