I find that their skin can look a bit oily too when they're ready to eat.
Chop one up and mix with some sour cream or yoghurt, a little tomato paste and salt and pepper for a quick small meal/snack.
Chop up, warm slightly and add chopped fried or grilled bacon, any bacon fat from the pan, a few pine nuts, and salt & pepper, for a more substantial meal. You can brown the pine nut slightly in the bacon fat or add them as is.
Have a look under our low carb recipes or do a forum search for more ideas. I think someone made tuna and avocado patties?
Robbity