Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a medium bowl, whisk together the flour, baking soda, and salt; set aside.
In a separate large bowl, beat the softened butter and cream cheese together until light and fluffy, about 2-3 minutes.
Add the granulated sugar and brown sugar to the butter mixture and beat until well combined and fluffy, about 2 more minutes.
Mix in the egg and vanilla extract until fully blended.
Gradually add the flour mixture to the wet ingredients, mixing just until combined.
Gently fold in the chopped strawberries and white chocolate chips, if using.
Drop spoonfuls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
Bake for 12-15 minutes or until the edges are lightly golden but the centers still appear soft.
Allow the cookies to cool on the baking sheet for about 5 minutes before transferring to a wire rack to cool completely.