Preheat your oven to 325°F.
In a food processor, place the OREO Cookies and process until they turn into fine crumbs.
Add in the melted butter and use a fork to combine.
Press the cookie crumbs firmly into a 9x9 baking dish, ensuring an even layer across the bottom.
Bake for 12 minutes to set.
While the crust is baking, in a large mixing bowl, use an electric mixer to beat the cream cheese until it’s light and fluffy.
Add in the Greek yogurt, sugar, and cocoa powder to the cream cheese. Mix until well combined.
Next, beat in the International Delight Toasted Hazelnut Creamer and eggs until the mixture is smooth and creamy.
Once the crust has finished baking, gently pour the cheesecake mixture over it.
Bake in the oven for 30 to 35 minutes, or until the center is set but still slightly jiggly.
Remove from the oven and run a knife around the edge of the pan to loosen the cheesecake.
Let the cheesecake cool at room temperature for 30 minutes before covering and refrigerating for at least 3 hours.
For the topping, stir together the creamer and 4 ounces of bittersweet chocolate in a medium saucepan over low heat until smooth.
Let it cool slightly before spooning over the chilled cheesecake bars.
Top with toasted, chopped hazelnuts and chocolate jimmies for an extra touch of flair before serving.