Reduce oven temperature to 300 degrees.
Beat cream cheese and sugar with an electric mixer until smooth and lump free. (Approximately 3 minutes.) Scrape down the sides of the mixing bowl with a spatula as needed.
Add 2 Tablespoons of flour and beat until incorporated.
Add sour cream, vanilla, peppermint extract and crushed candy canes then beat until combined.
Add eggs, one at a time, beating on low for a few seconds after each addition until just combined. (Overbeaten eggs will cause baked cheesecakes to crack so only beat the bare minimum.)
Pour cheesecake batter into the prepared Oreo crust.
Bake for 60 to 65 minutes or until the cheesecake's edges are set but the center is still slightly jiggly. Keeping cheesecake in the oven and the door ajar with a wooden spoon, turn oven off and allow cheesecake to cool in the oven for 1 hour.
Remove cheesecake from the oven. Place springform pan on a wire rack to cool to room temperature before topping with ganache.
Once cheesecake has cooled to room temperature, wet a butter knife with hot water then gently glide it around the outside edge of the cheesecake to loosen it from the pan before unlatching and removing the springform rim.