1½ teaspoons cornstarch
1 teaspoon baking soda
½ teaspoon salt
4 ounces (113g) full-fat brick cream cheese, softened to room temperature
¾ cup (170g) unsalted butter, softened to room temperature
½ cup (100g) granulated sugar
½ cup (100g) packed light or dark brown sugar
1 large egg, at room temperature
2 teaspoons pure vanilla extract
1 cup (180g) white chocolate chips
1¼ cups (about 110g) roughly chopped Oreo cookies, about 10 whole cookies