Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.

In a medium bowl, whisk together the flour, baking soda, baking powder, and salt. Set aside.

In a large mixing bowl, cream the softened butter and granulated sugar together until light and fluffy, about 2-3 minutes.

Add the egg and vanilla extract to the butter mixture, mixing until well combined.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Gently fold in the diced strawberries until evenly distributed throughout the dough.

Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart.

Sprinkle a little sugar on top of each cookie before baking.

Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden.

Remove from the oven and let the cookies cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.