Preheat your oven to 350°F (175°C). Line a cookie sheet with parchment paper.

In a large mixing bowl, blend granulated sugar and softened butter until light and fluffy.

Add egg, vanilla extract, salt, and baking soda to the creamed mixture. Stir until smooth.

Gradually add all-purpose flour to the bowl, mixing until a dough forms. Add milk if needed.

Stir in white chocolate morsels and gently fold in fresh blueberries.

Drop dough onto the prepared sheet and bake for 10-12 minutes.

Let the cookies cool before storing in an airtight container.