Cookies ‘N’ Cream Millionaire Shortbread

Name: Cookies ‘N’ Cream Millionaire Shortbread
Prep time: 20 min
Total time: 20 min
Cuisine: American
Ingredients: Cooking spray; 1/2 c. (1 stick) butter, softened; 1/2 c. granulated sugar; 1 c. all-purpose flour; 1/4 c. unsweetened cocoa powder; 1/4 tsp. kosher salt; 3/4 c. sweetened condensed milk; 4 tbsp. butter; 1/4 c. packed light brown sugar; 2 tbsp. light corn syrup; 1/4 c. semisweet chocolate chips; 1/3 c. heavy cream; 1 (8-oz.) block cream cheese, softened; 1/2 c. powdered sugar; 1 tsp. pure vanilla extract; 1 c. crushed Oreos (from about 10 Oreos); 1 c. semisweet chocolate chips