In a bowl stir together the butter, honey, chili oil, garlic, Worcestershire sauce, ginger, salt, and beer, set aside.
Rub the inside of your cast iron skillet with olive oil (*you can skip this step if you know for sure your cast iron skillet is well seasoned, but it won’t hurt to do this either way. If your skillet isn’t well seasoned the honey may stick without the oil).
Heat the sesame seed oil in the skillet over high heat. Add the prawns.
Pour in the butter mixture, allow to boil, stirring occasionally, until the mixture has thickened and the prawns are cooked through.
Remove from heat, top with green onions. Serve with rice, polenta, or crusty bread.