The white chocolate ganache (guh-NAH-shh) is the last layer.
In a heatproof bowl (or pyrex measuring cup, my preference), mix the white chocolate chips with the milk.
Place in the microwave for 1.5 minutes at 30% power, stirring thoroughly every 20 seconds.
If the white chocolate/milk mixture is a little too thick warm it up a little in 10 second increments at 30% power using above notes.
If white chocolate/milk mixture breaks or becomes separated looking, mix in a little more milk and heat a little longer. This should resolve it.
When the dessertception comes out of the oven, and while it’s still hot, pour the white chocolate/milk mixture over the top, carefully distributing the ganache over the whole thing.
Cool completely on the counter on the wire cooling rack.