Step 1: Prepare Your Butter - Let 2 sticks of unsalted butter soften at room temperature for about 30 minutes.
Step 2: Mix the Butter - In a large mixing bowl, beat the softened butter with a mixer until smooth and creamy.
Step 3: Add the Powdered Sugar - Gradually add 2 cups of powdered sugar, mixing on low speed until incorporated.
Step 4: Incorporate Vanilla - Pour in 1 teaspoon of vanilla extract and continue to beat until fluffy.
Step 5: Adjust Consistency (Optional) - Add a splash of heavy cream for a creamier texture.
Step 6: Taste and Adjust - Taste the buttercream and adjust sweetness with more sugar or vanilla as desired.
Step 7: Use or Store - Frost your treats or store in an airtight container in the refrigerator for up to one week.