Strawberry Buttercream Icing - cooking recipe

Ingredients

16 ounces fresh frozen sliced strawberries with sugar, Puree and reserve 1 Cup
1 cup softned salted butter (2 Sticks)
2 tablespoons milk
1 1/2 teaspoons vanilla extract
8 cups powdered sugar

Preparation

Mix on med high the stawberry puree, butter, milk, vanilla and 4 cups of powdered sugar for 8-10 minutes (yes, that long! Trust me you will know it if you don't). I use a KitchedAid, it makes it so much easier.
Add the remaining 4 cups of powdered sugar 1 cup at a time until thoroughly mixed.