Mix the Oreo crumbs and melted butter together in a bowl, then press into the bottom of a 9-inch springform pan. Bake for 10 minutes. Cool completely.
In a large mixing bowl, beat the cream cheese, sugar, and vanilla together until creamy.
Add the eggs one at a time, beating well after each addition.
Pour the mixture onto the prepared crust and bake for 50-60 minutes or until set in the center. Turn the oven off and let the cheesecake rest inside for another 10 minutes before removing from the oven.
Cool the cheesecake for one hour at room temperature, then cover and refrigerate for at least 4 hours or overnight.
Before serving, top the cheesecake with chopped candied pecans and slice into pieces.