1. Soften Butter to room temperature
2. Beat butter in bowl (medium for ~2 min)
3. Gradually add powdered sugar and salt, alternating with half+half and vanilla, beating at low speed and scraping bowl often until well mixed. Beat at medium for 1-2 minutes until creamy, smooth, and fluffy
https://www.landolakes.com/recipe/16853/best-buttercream-frosting/