01 -
Set your oven to 350°F (180°C). Go for 325°F (170°C) if you’re using convection. Grab a 9-inch springform pan and wrap it in several layers of foil all over, including the bottom. This stops water leaks.
02 -
Smash up the Oreos (filling and all) into tiny crumbs—either in a bag with a rolling pin or in a food processor. Mix the crumbs with your melted butter until it holds together.
03 -
Push the crumb mix into the bottom of the pan and build up a little edge around the sides. Bake it 8 minutes, then pull it out but don’t unwrap the foil. Keep your oven on.
04 -
Mix instant coffee into the Kahlua in a small bowl so it totally disappears.
05 -
With a mixer in a big bowl, blend the cream cheese and sugar till it’s all silky. Add in the sour cream and blend again. Pour in the Kahlua-coffee mix while running your mixer slowly. Try some batter—if you want, splash another tablespoon or two of Kahlua.
06 -
In a different bowl, whisk the eggs and extra yolks. Beat these into your cream cheese mix in a couple rounds. Blend just enough to get it mixed with no streaks.
07 -
Put your wrapped pan with crust into a bigger roasting pan. Pour your cream cheese mix in and smooth the top. Add hot water to the outer pan so it comes about halfway up the sides.
08 -
Bake for about 50-60 minutes. When you shake the pan gently, the center should jiggle a bit but not look soupy.
09 -
Turn off the oven and keep your cheesecake inside with the door closed for an hour. Pull out the roasting pan and let the cheesecake hang out in the bath until the water cools. Move the pan to a wire rack and let it get just warm.
10 -
Seal the pan with foil or wrap. Pop it in the fridge and leave it for a good 6 hours or overnight to set up fully.
11 -
Toss your chopped chocolate into a heatproof bowl. Warm your cream and Kahlua until it’s hot, pour it over the chocolate, and let everything sit a bit. Whisk until super smooth. If you see lumps, microwave for a few seconds and stir.
12 -
Take the cheesecake out of the fridge. Get rid of the foil. Run a thin, sharp knife around the edges, open the pan, and gently remove. Wipe off any moisture on top.
13 -
Pour the chocolate ganache on top, spreading it out and letting some spill over the edge. Chill till the ganache sets. When you’re ready, use a sharp knife (wipe it between slices) to cut and serve.