This won't use up much chocolate, but I keep super ripe peeled bananas in the freezer specifically to make an "ice cream" that is simply banana. Put chunks of frozen bananas in a food processor and let it run. You may have to scrape it down occasionally. Let it run some more. After a few minutes it will get very pale in color and creamy, and with a texture much like soft serve. The mouthfeel is much like a dairy product. At this point, I sometimes add cocoa, chopped chocolate, or another fruit such as strawberry or peach, or some flaked coconut.
Also, a mix of melted chocolate and coconut oil makes for a great homemade ice cream shell topping.
