In a large bowl, whisk together the flour, baking powder, salt, and sugar.
Cut in the shortening until it resembles coarse crumbles.
In a small bowl, mix together the milk and egg; add to the flour mixture and stir until mixed.
Turn out onto a floured surface and knead 20 times.
Roll the dough into an oblong shape ¼ inch thick.
Spread the remaining melted butter on the dough and then sprinkle with the remaining brown sugar.
Roll up the dough jelly-roll style, cut into ½-inch-thick pieces, and place them in the prepared muffin pans.
Bake for 20 to 25 minutes or until done.