Preheat the oven to 350 degrees and spray a 9x13 baking dish with pam baking spray
Using a medium bowl, combine the brown sugar, sugar, and butter using your fingers to create acrumble topping
Mix in the chopped pecans
Using a large bowl, combine the crushed pineapple, pineapple cake mix, eggs, and oil
Pour the batter into the baking dish and sprinkle the crumble topping on top
Bake in the oven for 35 - 45 minutes or until a toothpick comes out clean
Allow coolingUsing a small bowl, whisk the powdered sugar, milk, and pineapple juice until combined
Drizzle the glaze over the cake and serve
Enjoy