Pour 2 cups or one 10-12 ounce bag of chocolate chips into a pint mason jar. Measure 3 tablespoons of coconut oil onto the top of the chocolate chips. Make sure to place the coconut oil so it does not melt onto the outside of the jar. Microwave the mason jar of chocolate chips and coconut oil, uncovered, for 20 to 30 seconds. Be careful as the jar and the mixture may be hot! Measure another 3 tablespoons of coconut oil into the jar. Microwave another 20 to 30 seconds. Stir the mixture together. If there are still chunks of chocolate chips, microwave the jar another 10 seconds and stir the mixture until smooth. If needed, continue microwaving at 10 second intervals, stirring after each interval. Put the lid on the mason jar and allow to cool slightly before spooning onto ice cream. Or store in a cabinet or a pantry until ready to use. If the chocolate magic shell solidifies during storage, microwave uncovered for 10 seconds at a time until it is melted.