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.
1/2 cup butter, 1/2 cup light brown sugar, 1/3 cup granulated sugar, 1 egg, 2 tsp vanilla extract
Fold in the flour, baking soda, and salt just until the flour mixture disappears.
1/2 tsp Baking soda, 2 cup AP flour, 1 tbsp cornstarch, 1/2 tsp 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.
1/3 cup raspberries, 1/2 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.