Preheat the oven to 350F, then line a baking sheet with parchment paper and set aside.
Cream the butter, brown sugar, and granulated sugar together. Mix in the egg and the vanilla extract until combined.
½ cup butter, ½ cup light brown sugar, ⅓ cup granulated sugar, 1 egg, 2 teaspoon vanilla extract
Fold in the flour, baking soda, and salt just until the flour mixture disappears.
½ teaspoon Baking soda, 2 cup AP flour, 1 tablespoon cornstarch, ½ teaspoon salt
Gently fold in the roughly chopped raspberries and white chocolate chips. Make sure to not overmix so that the raspberries don't bleed into the cookie dough.
⅓ cup raspberries, ½ cup white chocolate chunks
Using a small cookie scooper (2 tbsp), scoop out equally sized cookie dough balls. Place them on the prepared baking sheet leaving about 2 inches of room between each cookie dough ball. Top with a few extra pieces of raspberry.
Bake in the preheated oven for 9 minutes. Top each cookie with a few extra pieces of white chocolate if you'd like. Let the cookies cool down on the baking sheet for 15 minutes before transferring them to a cooling rack to cool down fully.