French Buttercream Frosting

1 1/2 cups unsalted butter
2 cups confectioners' sugar
1 teaspoon vanilla extract
1/4 teaspoon butter flavored extract
1/2 cup heavy whipping cream
4 tablespoons all-purpose flour
1.Mix heavy cream and flour in a small bowl. Heat the mixure in the microwave for 45 seconds on high. Set aside to cool.
2.In a mixing bowl, combine butter, confectioner's sugar, vanilla extract and butter extract.
3.Using and electric mixer, beat on low until combined. Then beat on medium speed for 6-8 minutes.
4.Next add the heavy cream mixture, and beat on medium speed for another 10 minutes. ( Mixture will appear soupy at first, but will become fluffy"