This is my favorite caramel frosting!
1 stick unsalted butter
1 cup light brown sugar, lightly packed
1/2 teaspoon salt
1/4 cup whole milk
2 teaspoons pure vanilla extract
4 1/2 cups powdered sugar
In a large pot over medium high heat melt together the unsalted butter, lightly packed light brown sugar and salt. Once melted together, stir and cook for 2 minutes until lightly brown and bubbly.
Add in the whole milk and pure vanilla extract. Stir together. Remove from heat.
Beat in the powdered sugar until smooth.