Pineapple Cake - cooking recipe

Ingredients

1 box Butter Gold (yellow) cake mix
1 (15 oz.) can crushed pineapple with juice
1 stick margarine
1 1/2 c. sugar
1 tsp. vanilla

Preparation

Bring to boil in heavy saucepan.
Add the cup of reserved batter.
Cook until thickened, as in cream gravy.
Pour over warm cake.