Preheat oven to 325°F (163°C). Line the bottom of a 9-inch springform pan with parchment paper and grease the sides.
Mix Oreo crumbs with melted butter and press into the bottom of the pan. Bake for 10 minutes, then remove and set aside.
In a large bowl, beat cream cheese until smooth. Add brown sugar and flour, mix until well combined.
Add sour cream and vanilla. Mix in eggs one at a time, scraping down the bowl as needed.
Pour half of the batter over the crust. Drizzle with some caramel and sprinkle with half of the pecans. Add the rest of the batter.
Wrap pan in aluminum foil and place in a water bath. Bake for 1 hour and 30 minutes.
Turn off oven and let cheesecake cool inside for 30 minutes. Remove from oven and cool to room temp. Chill for 5-6 hours or overnight.
Before serving, top with remaining caramel, pecans, and chocolate ganache made by melting chocolate chips with cream.