Place heavy cream in a small saucepan over medium heat. Heat just until the cream starts to bubble slightly at the edges of the pan. Remove from the heat.
Place the chocolate chips in a heat-safe bowl. Pour the warm cream over the top. Let sit for 3 minutes, then whisk together.
Notes
The hot fudge will harden as it sits. To make it runny again, microwave it in 15 second intervals, stirring in between.This will keep in the refrigerator (in a jar with a lid) for up to 2 months.To change things up, make this recipe with dark chocolate chips or bittersweet chocolate chips instead. White chocolate chips would be delicious, too!