In heavy saucepan, melt butter.
Add half and half, brown sugar, egg yolks or egg substitute, blending with wire
whisk
. Heat and stir until mixture starts to boil. Cook, while stirring, on low heat 5-7 min or until frosting has thickened.
Add vanilla, cool. Fold in nuts, coconut. Makes 2 1/2 c frosting for
German Chocolate Cake.