German Chocolate Cake - cooking recipe

Ingredients

1 box chocolate cake mix
1 1/2 c. sugar
1 1/2 c. evaporated milk
4 egg yolks
1 c. butter or margarine
1 1/2 tsp. vanilla
1 tall can coconut (7 oz.)
1 1/2 c. chopped pecans

Preparation

Bake cake according to directions on package, using 2 (9-inch) round pans.
Cool completely.
Beat egg yolks slightly and pour into heavy 2 to 3-quart saucepan.
Add sugar, butter, vanilla and milk.
Stir together well; cook and stir over medium heat until thickened, about 10 to 12 minutes.
To help thicken, you may add 2 to 3 tablespoons cornstarch.
Add to ingredients before starting to cook.
Remove from heat; add coconut and chopped pecans, stirring well to mix.
Cool completely and spread between layers. Spread the rest over top and sides of cake.