In a small saucepan bring the half & half to a low simmer. Take off heat, and immediately add the chocolate chips.
Put the chocolate chips into the hot half & half. Use a spoon to spread the chocolate out so it is mostly submerged.
Let it sit for 10 minutes, then whisk in small, fast circles till completely blended, and all the chocolate is smooth.
Before it cools pour it over the top of the cake are other dessert. Use a back of a spoon to spread and smooth it out letting some of it drip down the sides. Let it sit and cool so solidify a little bit before eating so it will hold its form.