Preheat your oven to 350°F (175°C).
Grease your skillet lightly with butter or non-stick spray.
In a mixing bowl, combine the softened butter, eggs, maple syrup, and vanilla extract. Whisk until creamy.
In a separate bowl, whisk together the whole wheat flour and baking soda.
Gradually add the dry ingredients into the wet mixture, stirring until just combined.
Gently fold in the chocolate chips.
Transfer the cookie dough into the prepared skillet and spread it evenly.
Bake for about 20-25 minutes until the edges are golden brown.
Allow to cool in the skillet for about 10 minutes before slicing.