Preheat the oven to 350°F (175°C).

In a mixing bowl, cream together the softened butter and sugar until light and fluffy.

Add the flour, melted chocolate, vanilla extract, and salt, mixing until combined.

Drop spoonfuls of the batter onto a baking sheet lined with parchment paper.

Bake for 10-12 minutes or until the edges are golden brown.

Let the cookies cool on the baking sheet for a few minutes before transferring to a wire rack.