Crust: take Oreos apart, scrap filling out and discard. Finely crush cookies

Melt butter and add to oreo crumbs. When well mixed, put crust mix in springform pan. Press evenly on bottom amd 1/2" up sides

Cheesecake:

Put cream cheese and brown sugar in mixer and cream until well blended and fluffy.

Add eggs, 1 at a time, making sure they are blended well

Add in cream and caramel. Mix well.

Pour in pan and bake at 350 until sides are set. Middle will be slightly soft. Remove from oven and cool

Caramel layer:

Put butter, brown sugar and caramel in saucepan.

Stir over medium heat until sugar is dissolved. Continue to cook until mixture comes to a boil. Boil for 2 minutes.

Remove from heat. Whisk in cream and sea salt. Mix very well. Set aside

Ganache:

Put chocolate chips in bowl. Place bowl over sauce pan with water. Bring water to boil.

Add cream and stir until chips are all melted.

Assembly:

When cheesecake is cooled, add caramel topping and spread evenly.

When caramel topping has cooled slightly, pour ganache over topping and spread evenly.

Let cheesecake cool completely and chill. Remove from pan and cover. Keep in refrigerator until ready to serve.