Step 1

Finely chop the white chocolate and place it in a microwave-safe bowl.

Step 2

Microwave for 30 seconds, stir, and repeat in short bursts until smooth.

Step 3

Set aside until slightly warm but not hot. Do not add it hot to the buttercream, or it may melt the butter.

Step 4

Add softened butter to a mixing bowl.

Step 5

Using a hand mixer or stand mixer (paddle attachment) on medium speed, beat for 1–3 minutes until light and fluffy.

Step 6

Pour the full can of sweetened condensed milk into the butter.

Step 7

Mix for one minute or until fully combined.

Step 8

Add the warm melted white chocolate to the butter mixture.

Step 9

Mix for 1–2 minutes until the buttercream is well combined and silky smooth.

Step 10

The buttercream is ready to use immediately.

Step 11

Store in the fridge for up to one week or freeze for up to two months.

Step 12

Before using, bring back to room temperature and mix again until smooth.