• Preheat the oven to 350 degrees fahrenheit.
• Pulse the oreos in a food processor until the cookies have become a fine crumb. Pour in the melted butter and pinch of salt and blend until combined.
• Pour your crumb mixture into the prepared springform pan and press evenly into the bottom of the pan and up the sides of the pan. You can use the bottom of a flat glass or a flat measuring cup to really press it in well and get a nice, even crust.
• Bake for 10 minutes. Allow to cool completely.

Cheesecake

• Preheat the oven to 350 degrees fahrenheit. Using 18 inch heavy duty aluminum foil, wrap the outside of a 10-inch springform pan with 4 sheets of foil. Make sure the sheets of foil go all the way up all sides of the pan to prevent water from getting in.
• Add your softened cream cheese to the mixing bowl of your stand mixer and beat with a paddle at medium/high speed for about 1 minute. Scrape down the sides and bottom of the bowl and beat for a few seconds more. The goal is to make sure the cream cheese is as smooth as possible so your cheesecake doesn’t have any lumps in it.
• Add the sour cream, cocoa powder, and sugar and mix at medium-low speed until just combined. Scrape the bowl again and mix for 10 seconds.
• Add eggs and Bailey’s and beat on low speed until combined, about 30 seconds-1 minute. Scrape the bowl again.
• Place your wrapped cheesecake pan in a deep roasting pan. You can alternatively use a baking sheet, so long as the sides are about 2 inches deep.
• Using very hot water, add water to the baking sheet until there is about 1 ½ inch of water around the springform pan. On a rack in the lower 3rd of the oven, carefully move your pan into the oven.
• Bake for 1-1 ½ hours. After about an hour of baking, check the cheesecake’s consistency. A slight jiggle of the pan (while still in the oven) should tell you if it’s ready or needs more time. The cheesecake should be jiggly, but not liquid. If it seems very liquidy still, give it 10-15 more minutes and check it again.
• Once the cheesecake is set, yet jiggly, turn the oven off but leave the cheesecake in the oven for another hour or so, until the oven has cooled down. Resist the temptation to open the oven during this time! The purpose of this step is to allow the cheesecake to cool slowly as the oven cools. Doing this will prevent it from cracking, as one of the biggest reasons cheesecakes crack is the drastic temperature change going from the hot oven into the much cooler kitchen. Once the oven and the cheesecake are cooled, remove from the oven and carefully remove the foil lining the pan. Chill in the fridge for at least 6 hours.
• Before serving, run a knife around the edge of the pan to ensure an easy release when the springform is removed. Top with whipped cream and additional oreos as you desire.

Ganache

• Heat the cream in the microwave for 30 seconds, until steaming. Pour over the chocolate and let sit for 3 minutes. Stir until smooth. Add the Bailey’s and mix until combined.
• Drizzle ganache over the cheesecake and top with whipped cream, if desired.