Shrimp is abundant here along the Mississippi Gulf Coast, and this is a party recipe that we've been making in one form or another for as long as I've been around. Often made simply with bottled Italian dressing, and maybe the addition of a few other ingredients, it's also been floating around social media for several years now, sometimes called Italian Shrimp. I made my sauce base from scratch instead.
I don't know where this idea originated, but back in 2007, Southern Living magazine dubbed it with the title of Beach Shrimp, since it's a great dish to make for that beach vacation! It's delicious slightly warm from the oven, or chilled and brought to room temperature. Prepare it in a disposable aluminum pan for easy clean up.