Custard Icing - cooking recipe

Ingredients

1 c. milk
1 heaping Tbsp. cornstarch
1/2 c. margarine
1/2 c. shortening (Crisco)
1 c. powdered sugar
1 tsp. vanilla

Preparation

Slowly bring to a boil the milk and cornstarch.
Set aside until cool.
Cream margarine and shortening until smooth; add powdered sugar and vanilla.
Add milk mixture and whip for about 3 minutes.