White Chocolate Icing

From cake central. -- their notes:i have used this recipe for a lot of cakes. It is great for wedding cakes. Takes paste colors pretty well too.""

Melt chocolate in top of double boiler.

Stir flour into chocolate.

Add milk a little at a time and blend well.

Cook over medium heat , stirring constantly , until very thick.

It should have the texture and consistency of thick pudding.

Cool completely.

In a large bowl , beat sugar , butter and vanilla until light and fluffy.

Gradually add cooled chocolate mixture and beat until icing is the consistency of whipped cream.

white chocolate, flour, milk, sugar, butter, vanilla