Prepare the waffle iron by preheating it to medium heat and greasing it with non-stick spray or melted butter.

In a mixing bowl, combine softened salted butter, light brown sugar, and granulated sugar. Beat until light and fluffy, about 2-3 minutes.

Add one large egg at a time, mixing well after each addition, then pour in the vanilla extract and blend until well combined.

In a separate bowl, whisk together all-purpose flour, baking powder, and baking soda. Gradually add this to the wet ingredients, stirring gently.

Pour the batter into the preheated waffle iron, avoid covering the edges, and cook for about 3 minutes until golden brown.

Carefully remove cookies from the waffle iron and let them cool slightly on a wire rack. Dust with powdered sugar if desired.