I stay out of the kitchen as much as possible, but here is a tip I started doing when I make muffins. I butter them right away. I take a sliver of butter and make a slice across the top of the muffin. Stick the butter down into the muffin and let it melt away. If they are not eated right away, it is easy to pop it into the microwave and reheat it with the butter already in it.