Creating salted caramel buttercream is a straightforward process. Follow these steps to achieve perfect results every time:

1. Prepare the Butter: In a large mixing bowl, beat the softened unsalted butter using an electric mixer on medium speed until smooth and creamy. This should take about 2 minutes.
2. Add the Caramel Sauce: Gradually add the caramel sauce to the butter while continuing to beat on medium speed. Ensure the caramel is fully incorporated before moving to the next step.
3. Incorporate the Sugar: Slowly add the sifted powdered sugar, one cup at a time, beating on low speed to avoid a sugar cloud. Once all the sugar is added, increase the speed to medium-high and beat until the mixture is fluffy and well combined.
4. Adjust the Consistency: Add heavy cream, one tablespoon at a time, to reach your desired consistency. For a thicker frosting, use less cream; for a lighter, more spreadable frosting, add a bit more.
5. Flavor the Frosting: Add the vanilla extract and sea salt, then beat on medium speed until well combined. Taste the frosting and adjust the salt level if necessary.
6. Optional Enhancements: If using optional ingredients, incorporate them at this stage. Add dark brown sugar, cream cheese, or espresso powder, and beat until smooth and fully blended.
7. Final Touch: Give the buttercream one last mix on high speed for about 30 seconds to ensure it’s light and airy.