I like your slider molds! Very creative. Nice smooth cutting, even without a PVC form. When you have time, could you share your bun recipe?
My favorite slider of all time has to be from the White Castle chain. When I was a kid in the mountains of Maryland, going there was a special treat. They were made simply, but with a consistently wonderful taste, close to the In-N-Out burger. Beef, onion, pickle and cheese on a small soft roll. I think they steamed the sandwich over the onion pieces.