Buttercream Frosting - cooking recipe

Ingredients

1 cup milk
1/4 cup cornstarch
1 cup butter
1 cup sugar
1 teaspoon vanilla

Preparation

Cook milk and cornstarch over low heat until pasty.
Remove from heat and cool completely.
Whip butter, sugar and vanilla.
Add milk and cornstarch mixture a little at a time, while whipping at high speed.
Frost cooled cake.