If you want really good banana baked goods, whether muffins, cupcakes or bread, overcoming any squeamishness towards overripe bananas is a must.  That is the key to the flavor.  And when I say overripe, I mean over-ripe.  Like black overripe.  Like need-to-pick-up-bananas-with-latex-gloves-and-throw-in-the-incinerator overripe.  If you look at the picture below, those are overripe bananas.  But