Preheat oven to 325ºF. In a large bowl, use an electric mixer to whisk the eggs until stiff peaks form. Fold in the sugar and baking powder and mix gently. Add the crushed Ritz crackers and the nuts and mix gently to combine.
Bake the Crust:
Grease a 9x13'' baking dish. Pour the Ritz cracker mixture into the baking dish and flatten with a spatula. Transfer to the oven for 25-30 minutes until golden brown.
Remove the pan from the oven and cool completely.
Prepare the Topping:
Combine the Cool Whip, cream cheese, and the strained crushed pineapple and mix to combine.
Finish the Cake:
Pour the topping on top of the cooled crust. If desired, add maraschino cherries and toasted coconut on top. Transfer to the fridge for at least one hour to set up. Enjoy!