Cream the softened unsalted butter in a large mixing bowl with an electric mixer until light and fluffy, about 2-3 minutes.

Add half of the pumpkin-flavored cream cheese to the butter mixture and mix until fully blended and creamy, about 2 minutes.

Incorporate the remaining pumpkin cream cheese, vanilla extract, and a pinch of fine sea salt, mixing initially on low speed and then on medium for 1-2 minutes.

Gradually add the powdered sugar, starting with 4 cups, while mixing on low speed to prevent a sugar cloud, then increase speed to medium for 3-5 minutes.

If too thin, chill the frosting in the refrigerator for 30 minutes, then store in an airtight container.