In a large bowl or stand mixer fitted with a paddle attachment, cream butter on low speed until pale and creamy.

Slowly add in 2 cups confectioners' sugar and 2 tbsp heavy cream a little at a time, alternating between each, while mixing on low over the course of about 3 minutes.

If your frosting needs a more stiff consistency, add remaining sugar. If your frosting needs to be thinned out, add remaining cream.

Add vanilla, cinnamon, and salt.

Beat on medium-high for about 2-3 minutes until frosting is light and fluffy.

Frost or fill your baked goods or just lick the beaters.