I haven't tried it, but the slots are exactly 1 1/4 inches wide. They adjust to the size of whatever you put in the toaster. It would depend on the width of the hard roll, and how you slice it in half. I would think that if you sliced I'd exactly in half you would have to smash it down a little. But, if you cut it so the top fits, you would only have to smush the bottom half down. Your best bet for hard rolls is a toaster oven. If you are in the need for a toaster, this is the one to buy. I highly recommend this toaster.