In a large mixing bowl, combine the red velvet cake mix, cornstarch, salt, melted butter, eggs, and vanilla extract. Mix until well combined and a dough forms.
1 box red velvet cake mix, 1 tablespoon cornstarch, ¼ teaspoon salt, ½ cup unsalted butter, 2 large eggs, 1 teaspoon vanilla extract
Fold in the white chocolate chips or chunks until evenly distributed throughout the dough. Wrap the bowl with pastic wrap and place in the fridge for 30 minutes.
1 cup white chocolate chips or chunks
Preheat your oven to 350°F then line a baking sheet with parchment paper.
Scoop 2 tablespoon-sized portions of dough and roll them into balls. Place the cookie dough balls on the prepared baking sheet, leaving some space between each.
Bake in the preheated oven for 9-10 minutes or until the edges are set. The centers may still be slightly soft, but they will firm up as they cool.
Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.