If using loaf, slice into 24 thin pieces. If using rolls, cut each roll in half and flatten each half into a 2x3-inch oval.
Combine the sugar and cinnamon and mix well. Dip each dough piece in the melted butter and then in the cinnamon sugar. Line them up in a sprayed 9x5-inch loaf pan, each piece on it's edge, to make a loaf shape. Cover with plastic wrap and let double in size.
Remove wrap and bake at 350°F 20-25 minutes. Cool in pan 5 minutes and then place on cooling rack. Combine glaze ingredients and drizzle over warm cinnamon slices.