Preheat the oven to 350°F (177°C). Spray 9x13-inch baking pan with a cooking spray.
In a large mixing bowl with paddle attachment, combine cake mix, eggs and crushed pineapple.
1 box White Cake Mix, 3 large eggs, 1 cup crushed pineapple with juices
Beat everything on low until combined. And then increase the speed to medium high, and beat for 2 minutes. The batter will be white and fluffy.
Pour the batter into the prepared baking pan. Bake for 25-30 minutes, or until the inserted tooth pick comes out clean.
Meanwhile, in a mixing bowl, whip cream cheese until fluffy, about a minute.
4 oz plain cream cheese
Add sweetened condensed milk and drained crushed pineapple. Beat until combined.
½ cup sweetened condensed milk, ½ cup drained crushed pineapple
Pour the frosting over the cake. Chill in the refrigerator until ready to serve.