I use a double boiler method for melting the white chocolate for this recipe. White chocolate can be hard to melt. It easily burns or even separates. ESPECIALLY in the microwave! Do not microwave white chocolate. It never works. Trust me, I have failed at this a million times. Just save yourself. :) To make a double boiler, fill a small saucepan with a couple of inches of water and place it on the stove on medium-low heat. Add the white chocolate chips to a large glass bowl that will fit over the top of the pot on the top, being able to sit on top. Creating a double broiler will slowly melt the white chocolate, insuring it does separate or burn. This will take 10-20 minutes to fully melt. Low and slow is the name of the game for melting white chocolate. As the chocolate warms and melts, stir with a rubber spatula to make sure it is nice and smooth with no clumps remaining.