Let butter sit at room temp until it presses easily but still feels cool, about 60 to 65F.
Whip butter on medium-high for 2 minutes until lighter and fluffy.
Add powdered sugar, cinnamon, and salt.
Beat on low until sugar disappears, then medium for 1 minute.
Add honey and vanilla.
Beat on medium-high for 1 to 2 minutes, scraping the bowl once, until fluffy and spreadable.
Serve at cool room temperature with warm rolls.
