Step 1

Place the flour in a medium bowl and mix in 1/3 cup of melted ice cream. Using a fork or a hand whisk, whisk the ice cream and flour until smooth.

Step 2

Continue adding melted ice cream (1/3 cup at a time) to the flour mix until you have incorporated the two together and you have a smooth mix.

Step 3

Place the mix in a pan over the stove (low heat) and allow it to simmer. Once you notice it starts to simmer, vigorously stir it with a hand whisk until it has thickened and you have a paste like mixture.

Step 4

Place it in a bowl, cover with a plastic wrap and allow it to cool to room temperature.

Step 5

In a bowl of a standing mixer fitted with the paddle attachment, place the butter and sugar and mix starting with medium speed and increasing speed to high for about 5 minutes.Scrap the sides and bottom of the bowl.

Step 6

With the mixer on low, add the ice cream/ flour mix and increase speed too high.

Step 7

Keep mixer for about 5 extra minutes or until you have a thick and fluffy buttercream.