01 - Preheat your oven to 350°F (175°C).
02 - In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
03 - In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy, approximately 2-3 minutes.
04 - Beat in the eggs one at a time, then add the vanilla extract and mix until thoroughly combined.
05 - Gradually incorporate the dry ingredients into the wet ingredients until just combined, ensuring not to overmix.
06 - Gently fold in the chocolate chips, chopped tart cherries, and toasted walnuts (if using).
07 - Press the cookie dough evenly into a greased 10-inch oven-safe skillet. If desired, sprinkle white chocolate chips over the top for an aesthetically pleasing finish.
08 - Bake for 22-26 minutes, or until the edges are golden brown and the center appears set. Avoid overbaking to maintain desired texture.
09 - Allow the skillet cookie to cool in the skillet for 10 minutes before slicing and serving warm. It is excellent served with vanilla ice cream.