Pour the heavy whipping cream into a saucepan and heat over medium, stirring occasionally until just before it begins to boil.
Remove the pan from the heat and add the white chocolate chips. Stir continuously with a silicone spatula or whisk until the mixture is smooth and creamy.For easier mixing, let the hot cream sit on the white chocolate chips for 1–2 minutes before stirring.
Cover the bowl with plastic wrap and refrigerate for 3 hours.
Once thickened, drizzle the ganache over your dessert with a spoon or transfer it to a squeeze bottle for decorating.