Levain Chocolate Walnut Cookies are giant bakery-style cookies packed with gooey chocolate chunks, crunchy walnuts, and a thick, tender crumb that stays soft in the center and crisp on the outside.
1 cup (2 sticks) cold unsalted butter, cubed
¾ cup packed brown sugar
½ cup granulated sugar
2 large eggs
2 ¾ cups all-purpose flour
1 tbsp cornstarch
1 tsp baking powder
½ tsp baking soda
1 tsp salt
1 ½ cups semisweet chocolate chunks
1 ½ cups chopped walnuts
Preheat oven to 400°F (204°C). Line baking sheets with parchment.
Beat cold butter with sugars until creamy.
Add eggs one at a time, mixing until just combined.
In a separate bowl, whisk flour, cornstarch, baking powder, baking soda, and salt.
Gradually mix dry ingredients into butter mixture until combined.
Fold in chocolate chunks and walnuts.
Portion dough into 8–10 large balls (about 6 oz each). Keep tall.
Bake 9–11 minutes until golden on edges but soft in center.
Cool 10 minutes before transferring
Cookies can be frozen before or after baking. Use cold butter and high heat for best results.