1-Getting ready for this Chocolate Chip Cookie Cheesecake: First, heat treat the flour by microwaving it for about 90 seconds, then let it cool to make sure it’s safe to eat. Preheat your oven to 350°F and grease a 9-inch springform pan, lining it with parchment paper that extends above the edges for easy removal.

2-Next: combine the ground graham crackers, granulated sugar, a pinch of kosher salt, and melted unsalted butter, then mix in the mini chocolate chips. Press this mixture firmly into the bottom and up the sides of the pan, and bake it on the middle rack for 8 minutes. After that, reduce the oven heat to 325°F and prepare the cookie dough by creaming the room-temperature butter with light brown sugar, then adding milk and vanilla extract. Fold in the heat-treated flour, kosher salt, and mini chocolate chips to create a soft, sticky dough.

3-Place a large roasting pan on the bottom rack of the oven and boil about 5 cups of water on the stovetop. In a separate bowl, mix the cream cheese, granulated sugar, and cornstarch slowly until smooth, then add the eggs one at a time on low speed, followed by vanilla extract and sour cream. Fold in the mini chocolate chips for the filling. Scoop out eight 1-tablespoon-sized balls of cookie dough for decoration and chill them. Spread the remaining cookie dough evenly over the crust, then pour the cheesecake batter on top.

4-Final Baking Steps: Pour the boiling water into the roasting pan and place the cheesecake on the middle rack above it. Bake for 1 hour 20 to 30 minutes until the edges are puffed and the center jiggles slightly. Turn off the oven and crack the door open, letting the cheesecake sit inside for 45 minutes to cool gradually. Remove it, sprinkle the top with mini chocolate chips while still warm, cool at room temperature for 30 minutes, then refrigerate uncovered overnight.

5-Before serving, whip the heavy whipping cream with vanilla extract, powdered sugar, and dry milk powder until stiff peaks form, then pipe it around the edges. Top with the reserved cookie dough balls and extra chocolate chips. The total preparation time is about 14 hours, including 40 minutes of prep, 1 hour 20 minutes of cooking, and 12 hours of cooling.