Snickerdoodle Gooey Bars
Preheat oven to 375⁰F.
Line a 9x13x2-inch baking pan with foil and spray with nonstick cooking spray.
Mix cookie mix, butter, and egg in the bowl of a stand mixer fitted with the paddle attachment, or you can use a hand mixer. Mix until dough forms.
Press 1/2 of the cookie mix into the bottom of the prepared pan.
Top with sweetened condensed milk, keeping it away from the edges of the pan. Sprinkle evenly white chocolate chips.
Drop remaining dough by spoonfuls evenly over the top and spread them slightly to cover using your fingers. (It might be easier to spray your hands with cooking spray first.) Sprinkle the cinnamon-sugar topping over the top of the bars.
Bake for 25-35 minutes until the bars start to get golden brown. The center might still be a little jiggly, but it'll firm more as it cools. Cool completely before slicing. Bars are very gooey! Chilling them will make them less gooey and easier to cut, if desired.