1. Preheat the oven to 350°F and line two baking sheets with parchment paper.

2. In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt.

3. In a large mixing bowl, beat the softened butter, brown sugar, and granulated sugar until light and creamy.

4. Add the egg and vanilla extract, then mix until smooth.

5. Add the dry ingredients to the wet ingredients and stir until a soft dough forms. Mix in the milk to loosen the dough slightly if needed.

6. Scoop the dough into 10 to 12 portions and place them on the prepared baking sheets, leaving space between each one. Gently flatten the tops.

7. Bake for 9 to 11 minutes, until the edges are set and the centers are still slightly soft.

8. Cool the cookies on the pan for 5 minutes, then transfer to a wire rack.

9. Melt the chocolate chips in short intervals in the microwave, stirring until smooth.

10. Drizzle or spread the melted chocolate over each cookie.

11. Top with sliced strawberries and pink sprinkles if using.

12. Let the chocolate set slightly, then serve.