Preheat your oven to 350°F (175°C). Grease or line a 9×9-inch baking pan with parchment paper for easy removal and cleanup.

2. Mix Wet Ingredients:

In a large mixing bowl, combine the red velvet cake mix, melted butter, eggs, and vanilla extract. Stir until smooth and well-combined. The batter will be thick, which ensures a fudgy texture.

3. Add Mix-Ins:

Gently fold in the white chocolate chips and crushed Oreo cookies. Mix just until evenly distributed.

4. Spread and Bake:

Spread the batter evenly into the prepared baking pan, smoothing the top with a spatula. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.

5. Cool and Slice:

Allow the brownies to cool completely in the pan on a wire rack. Once cooled, slice into squares and serve.