1. Make the Crust:

• Preheat your oven to 325°F (163°C). Grease a 9-inch springform pan with butter or non-stick cooking spray and set aside.

• In a medium bowl, combine the rolled oats, flour, brown sugar, salt, and cinnamon.

• Add the melted butter and milk, and stir until everything is evenly mixed and the dough starts to come together.

• Press the mixture firmly into the bottom of the prepared springform pan to form a crust. Bake for 10-12 minutes, or until lightly golden brown. Remove from the oven and let it cool while you prepare the cheesecake filling.

2. Prepare the Cheesecake Filling:

• In a large mixing bowl, beat the cream cheese and granulated sugar together until smooth and creamy.

• Add the vanilla extract and eggs, one at a time, beating well after each addition.

• Gradually mix in the sour cream and heavy cream, then add the powdered sugar and continue to beat until everything is fully incorporated and smooth.

• Pour the cheesecake batter into the cooled oatmeal cookie crust.

3. Bake the Cheesecake:

• Place the cheesecake in the preheated oven and bake at 325°F (163°C) for 50-60 minutes, or until the edges are set and the center is slightly jiggly (it will firm up as it cools). You can also do the “toothpick test”—insert a toothpick into the center, and if it comes out clean, the cheesecake is done.

• Turn off the oven and leave the cheesecake in the oven for an additional 30 minutes to cool slightly.

• After 30 minutes, remove the cheesecake from the oven and let it cool completely at room temperature. Then, refrigerate for at least 4 hours or overnight to allow it to set.

4. Make the Oatmeal Creme Pie Filling:

• While the cheesecake is cooling, prepare the oatmeal crème pie filling for the topping.

• In a medium bowl, beat together the softened butter, powdered sugar, brown sugar, vanilla extract, and salt until light and fluffy.

• Gradually add the heavy cream and beat until smooth and creamy.

5. Assemble the Cheesecake:

• Once the cheesecake has chilled and set, spread the oatmeal crème pie filling evenly over the top of the cheesecake.

• Optionally, you can add crumbled oatmeal cookies on top for extra texture and flavor.

6. Serve:

• Slice and serve chilled. Enjoy the delicious combination of creamy cheesecake and the nostalgic flavors of oatmeal crème pie!