Preheat oven to 350 degrees and line an 8x8 baking dish with aluminum foil. Lightly grease with shortening. Set aside

Chocolate Chip Cookie Dough Layer - In a large mixing bowl, cream the butter, light brown sugar, and white granulated sugar.

Add in the egg and vanilla extract and mix. Slowly add in the all-purpose flour ½ cup at a time and mix thoroughly.

Add in the salt and baking powder. Fold in the chocolate chips.

Spread the cookie dough layer on the baking dish and spread all over. Make sure the layer is even.

Add the Oreos on top of the cookie dough layer.

Brownie Layer - Wash and dry the large mixing bowl, combine the melted butter, sugar, eggs, and cocoa powder. Mix together.

Add in the vanilla extract, flour, and salt.

Spread the brownie layer on top of the Oreo layer and make sure it is even.

Bake for 35-40 minutes. Insert a toothpick in the middle and if it comes out clean it is done.

Allow the brownies to completely cool.

Prepare the chocolate ganache layer by melted the chocolate chips and shortening in the microwave for 15 seconds at a time until the chocolate chips are melted. Stir in the heavy cream. Spread on top of the cooled brownie bars. Drizzle caramel sauce on top.

Slice and enjoy!