Helen's Soft Chocolate Frosting

Here is a good, fast-cooked icing.

Ingredients

 * 1/2 cup white sugar


 * 1/2 cup brown sugar


 * 3 heaping tbsp. cocoa


 * 3 heaping tbsp. cornstarch


 * 1 cup milk


 * 3 tbsp. margarine

Directions
1.Mix first four ingredients together in saucepan until well blended. Gradually add milk. Add margarine.

2.Cook over medium heat, stirring constantly until thick and smooth. (You may need to remove from heat occasionally to prevent sticking or lumping.)

3.Ice cake while the frosting is still warm. Ices two 9-inch layers. Recipe can easily be cut in half for a single layer cake or cupcakes.

Source
Helen's Soft Chocolate Frosting by Helen Monahan from Recipes for Better Nutrition During Cancer Treatment by the National Cancer Institute, public domain government resource—original source of recipe