I tried a shrimp recipe yesterday based on @Janefly 's recommendation and it came out very good. My daughter went crazy over them. I found a marinade recipe online that I tweaked. I had a pound of medium shelled shrimp in the freezer (41-60 count) and they were done somewhere between 20 - 25 minutes. I cooked at 250 with half a chunk of apple. I also stirred in a tablespoon of butter at serving. Below is the marinade I used. If I had a lemon on hand I would have put in some lemon zest too.
4 Tbsp olive oil
1 1/2 Tbsp soy sauce
1 tsp honey (you can certainly add more than this)
3/4 tsp granulated garlic (fresh garlic would be great too but I didn't have any)
1/4 tsp table salt
1/4 tsp black pepper
1/4 tsp red pepper flakes