1. Preheat the oven to 350°F (175°C). Line an 8×8 inch baking pan with parchment paper, leaving an overhang for easy removal.

2. In a medium saucepan over low heat, melt the butter and chocolate chips, stirring until smooth. Remove from heat.

3. Stir in granulated sugar until fully incorporated. Beat in 2 eggs and 1 teaspoon vanilla extract.

4. Add flour and salt. Stir until just combined. Fold in half of the crushed Oreos.

5. In a separate bowl, beat cream cheese until smooth. Add 1 egg, powdered sugar, and 1/2 teaspoon vanilla extract. Mix until creamy. Fold in remaining crushed Oreos.

6. Spread half the brownie batter in the prepared pan. Add the cream cheese mixture over the top.

7. Spoon the remaining brownie batter over and swirl gently with a knife.

8. Bake for 35–38 minutes or until a toothpick comes out with moist crumbs. Cool completely before slicing.