In a bowl, combine the cookie crumbs, melted butter and sugar and stir until the crumbs are well moistened. Pat the mixture firmly into the bottom and all the way up the sides of the pan dish. Bake until the crust is firm, about 12 minutes.
Bake until the filling is firm in the centre, 20-24 minutes. Then transfer to a wire rack and let cool completely before refrigerating for 2-3 hours until cold and firm. Serve with a scoop of ice cream or cream as desired.