1-Melt the butter and chopped chocolate together in a microwave-safe bowl using 30-second intervals until fully combined. Immediately stir in the cocoa powder to bloom the flavors and enhance that deep chocolate taste.

2-In a separate bowl, vigorously whisk the sugar and eggs until they lighten in color, which helps create those shiny, crackly tops we all love on brownies.

3-Drizzle in the melted chocolate mixture and stir to combine, making sure everything is well blended for a smooth batter.

4-Add the vanilla extract and mix thoroughly to boost the overall flavor profile.

5-Sprinkle the flour and salt over the batter, stirring until uniform, then fold in the mini chocolate chips if you’re using them for an extra burst of chocolate.

6-Pour half the batter into the prepared pan and spread it evenly. Next, nestle 20 chocolate sandwich cookies in even rows on top for that signature layer.

7-Add the remaining batter over the cookies and break the last 5 chocolate sandwich cookies, pressing the pieces gently into the top for a crunchy finish.

8-Bake at 350°F (175°C) for 30 minutes, or until a toothpick inserted comes out with fudgy crumbs don’t overbake to keep them moist!

9-Allow the brownies to cool completely before cutting and serving, which makes slicing easier and prevents them from falling apart.