Yellow cake mix--Bake according to directions on package in a 13 X 9 baking dish.
Topping:
2-3 pints of fresh strawberries sliced
1 1/4 c. sugar
1/2 c. Evaporated milk
4 T. butter
1 t. Vanilla
While your cake is baking in the oven, cut & slice your strawberries & set aside. When your cake is almost done baking combine your sugar, evaporated milk & butter in a sauce pan and heat to a boil. Stirring & mixing together continually, add your vanilla right when the sauce start to come to a boil. Allow your mixture to boil for 3 minutes. Once your cake is out of the oven for about 5 minutes, place your sliced strawberries on top of the hot cake. Then allow your heated sauce to cool slightly, about 5-7 minutes & pour your very warm/hot topping mixture over the strawberries that are on top of the cake.
(Basically everything happens quickly once you get your cake out of the oven. You want a very warm sauce mixture on top of a very warm cake to allow the heat to soak in all that sauce goodness along with the juice of the strawberries.)
Cover & place in the refrigerator to cool overnight or you can serve if the cake has been in the fridge for several hours. Top with whipped cream, if desired.