06If you use an electric mixer, combine the ingredients with the paddle attachment and then change to the dough hook.07Add the flour, a little at a time, until the dough is smooth and comes away from the sides of the bowl, about 2 to 4 minutes.08Turn the dough into a lightly oiled bowl and cover with a dry cloth or plastic wrap.09Let rise in a draft free spot until doubled in size, about 30 minutes.10Preheat the oven to 400 degrees.11Once the dough has risen, lift it out and cut into 8 equal balls.12Shape into flat 5-inch rounds for buns, or 6-inch oblongs for a hero- or hoagie-style rolls.13Place on a lightly oiled baking sheet and cover with a dry cloth.14Let rise in a draft free spot for 30 to 45 minutes.15Gently glaze the buns with the egg and sprinkle with the sesame seeds, if desired.16Bake for 10 to 12 minutes, until golden brown.17Transfer to a cooling rack until ready to use.