Preheat the oven to 325 degrees F and place rack in the centre of the oven. In a medium bowl, combine the graham cracker crumbs and 1/2 cup melted butter/margarine. Press the mixture into an 8×8? or 9×9? baking pan. Bake for 10 minutes, then cool completely on a wire rack. In a separate bowl, mix together the 1/2 cup softened butter/margarine, icing sugar, egg, and vanilla with an electric mixer until smooth. Spread this mixture over the crust once it has completely cooled. Bake for 15 minutes, then remove and cool completely on a wire rack. Prepare your whipped cream of choice. If using a carton of whipping cream, beat the cream in a medium bowl until it is thick and stiff. You may want to add 2 Tbsp. of white sugar and 1 tsp. vanilla extract for sweetness and flavor. Drain the juice from the canned crushed pineapple. Mix the whipped cream and pineapple together and spread evenly over top of the cooled butter filling. Garnish the dessert with a sprinkle of graham cracker crumbs. Keep chilled and serve cold.