Add the chocolate chips to a medium-sized microwave-safe bowl.
Pour the sweetened condensed milk over the top of the chocolate chips.
Microwave for 2 minutes on high. Then stir briskly to melt the chocolate chips into the sweetened condensed milk. If there are still lumps, microwave for 1 more minute, and stir briskly again.
Once smooth. stir in vanilla and a pinch of salt (optional).
This recipe can also be made on the stove top over medium-low heat.
Stir in the vanilla and pinch of salt at the end of heating after the chocolate is fully melted. Vanilla evaporates so you want to add it right at the end after the heating is finished. Salt is added at the same time as just a pinch to your personal tastes. Salt enhances the flavor of the chocolate.
Nutritional information is provided as a courtesy and is sourced from the USDA Food Database.