In a large bowl, combine the crust ingredients. Gently press the graham cracker mixture into a 9-inch springform pan.
In the bowl of a stand mixer, beat cream cheese for 2-3 minutes. Add the dulce de leche and combine. Use a rubber spatula to fold in the whipped cream.
Spread the filling onto the crust, cover and freeze for at least 4 hours. Then serve with the vanilla ice cream (optional).