In a bowl, stir together graham cracker crumbs and melted butter. Press mixture into an 8x8 inch baking pan. Bake for 15 minutes.
In another bowl, cream together butter and powdered sugar. Add eggs and mix until combined. Spread on top of graham cracker crumb mixture in the baking pan. Bake for 30 minutes.
While it's baking, whip whipping cream and then fold in crushed pineapple. Spread on top of cooled baking pan.