In the article accompanying the recipe, Keith explains "You char only one side of the onion to get all the glory and crunch of raw onion, with a penetrating, almost fire-cooked flavor." So you are spot-on correct about the crispness!
Oh my goodness...this was amazing! Puzzled why onions only seared on just one side, but the crispness of them was fantastic! This is definitely going to be on our favs list!
I was surprised at how much i enjoyed this; i'm a big meat eater, so this was a different main dish for me. Very good.
We used goat cheese instead of feta (allergy) and it was delish. Didn't use the whole pepper but will next time and FRESH oregano not dried.
I added the ground lamb & turkey and the spinach leaves like it mentioned in the recipe and this will definitely be made again. I didn't salt the onions, there was plenty of sodium in the feta and enough tang from the lemon.