Melt the White Chocolate Chips (1 cup) and Heavy Cream (1/3 cup) together, either in the Panasonic Microwave Oven in 15-second increments or over a double boiler. Make sure to just heat until incorporated, not hot. Set aside.
In a standing mixer fitted with a paddle attachment, slowly mix the Butter (2 cup) and Vanilla Extract (2 teaspoon) together while slowly adding the Powdered Confectioners Sugar (6 cup).
Slowly pour in the white chocolate ganache with the mixer still on low. At this point, the chocolate should be slightly warm but not hot. Add more powdered sugar. if it’s not the right consistency.
Once done, it should be creamy yet firm enough to pipe onto a cupcake or other dessert of your choice. Use as desired. Cooking results may vary depending on microwave oven used.