In a saucepan, heat the heavy cream over medium heat until it just begins to simmer; do not let it boil.
Remove the saucepan from heat and add the chopped Kinder Chocolate to the cream. Let it sit for about 2-3 minutes to let the chocolate soften.
Gently stir the mixture until the chocolate is completely melted and well combined with the cream.
Add the softened butter, vanilla extract, and a pinch of sea salt to the ganache. Stir until the butter has melted and the mixture is smooth and glossy.
Allow the ganache to cool at room temperature for about 30 minutes, stirring occasionally until it thickens to a spreadable consistency.
Once the ganache has reached the desired thickness, it is ready to be used as frosting on your favorite cakes or cupcakes.
Notes
Allow the ganache to cool until it thickens for best spreading consistency.