In a medium bowl combine graham cracker crumbs and melted butter until all crumbs are coated with butter.
Spray bottom of a 9 x 13 baking dish with non-stick cooking spray. Place crumb mixture into prepared baking dish and firmly press down until solid crust is formed. Place in refrigerator for 30 minutes or freezer for 10 minutes to set up the crust.
Meanwhile in a large bowl, using an electric hand mixer, beat together softened butter and cream cheese for 2 minutes. Start incorporating the 3 cups of powdered sugar 1 cup at a time until all mixed in. Should take another 3 minutes to get a creamy consistency.
Pull crust out of refrigerator/freezer and place dollops of the cream cheese mixture all over the crust. Using an offset spatula or a knife, spread mixture evenly all over the crust.
Place sliced bananas in an even layer over the cream cheese mixture. Spoon drained crushed pineapple over the banana slices. Evenly spread cool whip or prepared whipped topping over bananas and pineapple.
Distributed cherries all over the whipped topping. Sprinkle with chopped nuts. Drizzle with chocolate syrup or hot fudge sauce. Add sprinkles.
Refrigerate for 4 hours. Cut a slice and enjoy.