Combine cracker crumbs, brown sugar, nuts and butter; press into a 9-inch pie pan. For filling:
Combine cream cheese, sugar and eggs. Mix thoroughly and pour over shell. Bake for 20 minutes at 350 degrees. Cool.
Mix topping ingredients and cook over medium heat, stirring constantly until mixture thickens. Cool. Top pie with cooled topping and serve with whipped cream, if desired.