Let’s break down the process into easy-to-follow steps. I’ll guide you through each stage.

Step 1: Preheat and Prepare. Preheat your oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners.

Step 2: Make Crust. In a large resealable plastic bag or a food processor fitted with a metal blade, crush or blend the Oreos until fine crumbs form. Transfer the crumbs to a bowl and pour in the melted butter. Stir until the crumbs are completely coated and moistened. Press about 1 tablespoon of the crumb mixture into the bottom of each liner.

Step 3: Make Cheesecake Filling. In a large bowl using a hand mixer (or in the bowl of a stand mixer using the paddle attachment), beat the softened cream cheese, sugar, flour, cocoa powder, and salt until light and fluffy. Add the eggs one at a time, beating well after each addition. Fold in the melted bittersweet chocolate.

Step 4: Assemble and Bake. Pour the cheesecake filling over the crust in the prepared liners, filling each liner almost to the top. Bake until only slightly jiggly in the center, 12 to 14 minutes.

Step 5: Cool and Chill. Let the cheesecakes cool for 5 minutes in the pan, then transfer them to a rack to cool completely. Refrigerate until cold, at least 1 hour.

Step 6: Make Chocolate Ganache. Once the cheesecakes are cold, add the chocolate chips and heavy cream to a microwave-safe dish. Microwave in 10-second intervals, stirring until the chocolate is melted and the mixture is smooth and creamy.

Step 7: Top with Ganache. Spread about 1 tablespoon of the chocolate ganache on top of each cheesecake. Return the cheesecakes to the refrigerator to let the chocolate sauce set, about 10 more minutes.

Step 8: Make Chocolate Whipped Cream. In a large bowl, beat the heavy cream with the chocolate syrup until stiff peaks form, about 4 minutes.

Step 9: Decorate and Serve. Transfer the chocolate whipped cream to a piping bag fitted with a star tip (or simply use a spoon). Top each cheesecake with the chocolate whipped cream and garnish with a piece of Hershey’s bar.

These steps are not too difficult.