1 yellow cake mix
2 c. condensed milk
1 c. sugar
4 c. crushed pineapple (with juice heavy syrup)

In a 9"x13" pan, bake cake following instructions on box. While it is still hot, punch holes in cake with end of a wooden spoon. Pour condensed milk over entire cake; set aside.

In a medium size saucepan, cook pineapple and sugar over medium heat until it begins to caramelize. Pour pineapple mixture over entire cake, spreading evenly.