Giant bakery-style Levain chocolate walnut cookies with crisp edges, gooey centers, and bold chunks of chocolate and walnuts in every bite.
1 cup (2 sticks) cold unsalted butter, cubed
¾ cup brown sugar
½ cup granulated sugar
2 large eggs
2¼ cups all-purpose flour
1 cup cake flour
2 tsp cornstarch
1 tsp baking powder
½ tsp baking soda
¾ tsp salt
2 cups semi-sweet chocolate chunks
2 cups toasted walnuts, roughly chopped
Preheat oven to 410°F (210°C). Line baking sheets with parchment.
Beat cold butter with both sugars until just combined, about 1–2 minutes.
Add eggs one at a time, mixing briefly after each.
In another bowl, whisk flours, cornstarch, baking powder, baking soda, and salt.
Add dry ingredients to wet and mix until a stiff dough forms.
Fold in chocolate chunks and walnuts.
Divide into 6-ounce portions (about 8 large cookies).
Chill for 30–60 minutes (optional).
Bake 2–3 per tray for 9–11 minutes until golden on top and soft in center.
Cool 10 minutes on tray before moving to a rack.
Cold butter and large cookie size help create a gooey center and crisp edge. Cookies can be frozen before or after baking.