INGREDIENTS
1
Egg, large
2 3/4 cups
All purpose flour
1/2 tsp
Baking powder
1 tsp
Baking soda
1 cup
Brown sugar
14 oz
Dark chocolate chips, large
2 tsp
Kosher salt
1 cup
Sugar
1/2 tbsp
Vanilla extract
1/2 cup
Walnuts
2 sticks
Butter, unsalted
1/4 cup
Sourdough starter