Preheat oven to 350°F. In medium mixing bowl, combine Citrus Glazed Pineapple Cake Mix Packet 1 with next 2 ingredients and ½ cup coconut; blend well. Spread in a greased 8x8-inch baking pan or 9-inch round cake pan.
Bake 25-30 minutes or until toothpick inserted in the center comes out clean. Cool.
In large bowl, using an electric mixer on low, combine Citrus Glazed Pineapple Cake Mix Packet 2 with cream cheese. Slowly add coconut milk and rum, if desired; then pudding mix. Fold in whipped topping.
Top cooled cake with topping. Chill 2 hours or overnight. Toast remaining ½ cup coconut and use to garnish cake before serving.
Makes 9 servings.
Tip: To toast coconut, spread on a baking sheet. Bake at 350°F for 5 minutes, stirring frequently, until lightly toasted.