Start by placing the softened butter in a mixing bowl. Beat it with an electric mixer until it becomes light and fluffy, which usually takes about 2 minutes.

Gradually add in the powdered sugar, about a cup at a time.

Continue to mix until the sugar is fully incorporated into the butter.

Pour in the heavy cream and vanilla extract.

Mix on medium speed until fully combined and fluffy, about 2-3 minutes.

Taste the frosting and adjust sweetness by adding more powdered sugar or a pinch of salt as needed.

If you wish, add food coloring to achieve your desired shade.

Your buttercream is now ready to be spread on cakes or cupcakes.