Preheat the oven to 350 degrees. Grease a 13 x 9 pan.

In a bowl, mix together the cake mix, melted butter and 1 egg. Press it into the greased pan.

Drain the pineapple. Spread the pineapple evenly in the pan.

In a bowl, mix together the cream cheese, 2 eggs and 1 teaspoon rum or pineapple juice, until smooth. Slowly stir in the powdered sugar. Pour over the pineapple.

Sprinkle coconut over the top.

Bake in a preheated 350-degree oven for 45 minutes.

Cut into squares and serve.