Preheat the Oven: Start by preheating your oven to 350°F (175°C) and greasing a 9x13 inch baking pan.
Prepare the Batter: In a large bowl, melt the butter and stir in the sugar until well combined.
Add Eggs and Vanilla: Add the eggs, one at a time, mixing well after each addition. Stir in the vanilla extract to enhance the flavors.
Mix Dry Ingredients: In another bowl, whisk together the flour, cocoa powder, and salt. Gradually add this mixture to the wet ingredients until just combined.
Incorporate Cookies and Chocolate Chips: Gently fold in the crushed cookies and chocolate chips, ensuring they are evenly distributed.
Pour and Spread: Pour the batter into the prepared pan and spread it evenly.
Bake: Bake in the preheated oven for about 25-30 minutes or until a toothpick inserted in the center comes out clean.
Cool and Serve: Allow the brownies to cool completely before cutting into squares. Enjoy every delicious bite!