I made some pretty bomb sliders in a cast iron pan a few weeks ago.
Pretty simple recipe...uses those Hawaiian sweet rolls as the bread and just some ground beef and cheese in the middle. You can add whatever else you like of course, but that's the base. Slice the rolls in half and put the bottoms in the cast iron pan, fill with whatever you like, put the tops on, throw it in the oven til cheese is melty.
Beef was browned beforehand when I did it and I brushed the tops of the rolls with some garlic butter before putting it in the oven.
Pretty low effort and highly delicious