I found this recipe on YouTube. It's Russian, I think, and pretty simple and tasty.
I modified the recipe to drop the carbs.
Ingredients for 6 slices
1 medium onion
4 tbsp coconut flour
Handful of grated cheee
Technique is from the video, except that I whisked the flour into the eggs before adding to the cabbage because coconut flour can clump
If you use plain flour, calories will be about 170, and carbs will go up to 14g per slice.