14 ounces large dark chocolate chips
1/2 cup halved walnuts
2 3/4 cup all purpose flour
2 sticks of unsalted butter, slightly softened
1 cup sugar
1 cup brown sugar
1/2 tablespoon vanilla extract
2 teaspoons kosher salt
1 teaspoon baking soda
1/2 teaspoon baking powder
1/4 to 1/2 cup sourdough starter
1 large egg
Preheat oven to 350°F.
Cream together butter and add the egg.
Mix in the sourdough starter and vanilla extract.
In a separate bowl, combine the dry ingredients.
Mix the wet and dry ingredients. (Careful not to over-mix!) Incorporate the chocolate chips.
Allow the dough to rest for 15 minutes. Shape the dough into small balls (2 tsp. per cookie). Flatten and place on a cookie sheet.
Bake for 10 to 15 minutes.