Preheat the oven to 350°F. Line a 9x13-inch baking pan and spray the sides with nonstick spray.
In a medium bowl, using a hand mixer, whip the butter, sugar, and brown sugar together.
1¼ cups unsalted butter, 1 cup granulated sugar, ½ cup brown sugar
Beat in 1 egg.
3 large eggs
Stir in the flour, baking soda, baking powder, and salt until it comes together.
2¼ cups all-purpose flour, 1¼ teaspoons baking soda, ¼ teaspoon baking powder, ¼ teaspoon kosher salt
Fold in 1¼ cups of the chocolate chips and set aside.
1½ cups mini chocolate chips
Add the cream cheese, remaining eggs, lemon juice, and vanilla to a separate medium bowl and beat with a hand mixer until smooth.
16 ounces cream cheese, 2 teaspoons fresh lemon juice, 1 teaspoon pure vanilla extract, 3 large eggs
Beat in the powdered sugar.
1 cup powdered sugar
Press a little more than ½ of the cookie mix into the pan then pour in the cheesecake mix.
Crumble the remaining cookie dough around on top and sprinkle on the remaining chocolate chips, then bake for 30-35 minutes or until the top is light and golden brown.
Let it cool for at least 1 hour before slicing and serving.