Preheat oven to 350°. Line a 9”-x-9” baking pan with parchment paper, leaving a 2” overhang on the sides and grease with cooking spray.
In a large bowl using a hand mixer, beat butter and sugars together. Add egg and vanilla and beat until incorporated. Add flour and salt and beat until just combined, then fold in chocolate chips.
Press dough into pan and bake 20 minutes. Reduce oven to 325°.
In a large bowl, beat cream cheese, sour cream, and sugar until smooth. Add eggs, vanilla, and salt and beat until incorporated. Add blue food coloring until desired color is reached. Pour batter over crust and smooth top, then top with Chips Ahoy and Oreos.
Bake until cheesecake only slightly jiggles in center, 30 to 40 minutes. Turn off oven, prop oven door open and let cheesecake cool in oven, 1 hour. Refrigerate cheesecake at least 4 hours and up to overnight.
Remove cheesecake from pan and cut into squares.
Recipe by 5* trending recipes with videos at https://food.theffeed.com/2019/09/25/cookie-monster-cheesecake-bars/