Preheat oven to 350@. Thaw rolls halfway so that you can flip them out of tray and cut in half horizontally as a whole piece, then put the bottom half back in the tin. Melt the butter and brown sugar on low heat in a saucepan until sugar melts in the butter and is caramel in color. Brush butter/sugar mix on bottom half of rolls, then tear up ham evenly among the 3 tins, put the tops back on and brush with butter/sugar mix. Heat for 15 minutes or until golden brown and cooked through. (If you are serving immediately, otherwise just cook about 10 minutes then wrap in foil and freeze in ziploc bag. If you do that, just pull out whenever you want, thaw and reheat for another 8-10 minutes at 350@) Cut into individual rolls.