¾ cup <g class="gr_ gr_1214 gr-alert gr_gramm gr_inline_cards gr_run_anim Punctuation only-del replaceWithoutSep" id="1214" data-gr-id="1214">butter,</g> softened ½ cup brown sugar ½ cup sugar 2 eggs 1 teaspoon vanilla extract 1½ cups flour 1 teaspoon baking soda 1 teaspoon salt 1 teaspoon baking powder 2 bananas, ripe and peeled. ½ cup pieces chopped chocolate bar