Thick, gooey, bakery-style chocolate walnut cookies inspired by the famous Levain Bakery in NYC. Crispy outside, soft and rich inside.
1 cup cold unsalted butter, cubed
¾ cup light brown sugar
½ cup granulated sugar
2 cold large eggs
1½ tsp vanilla extract
3¼ cups all-purpose flour
1 tbsp cornstarch (optional)
1 tsp baking soda
1 tsp baking powder
½ tsp salt
2 cups semi-sweet chocolate chunks
2 cups chopped walnuts
Preheat oven to 400°F. Line baking sheet with parchment.
Whisk flour, cornstarch, baking soda, baking powder, and salt.
Cream cold butter and sugars until just combined. Add eggs and vanilla.
Gradually mix in dry ingredients until dough forms.
Fold in chocolate and walnuts by hand.
Portion dough into 6–8 large balls (6 oz each).
Place on sheet, bake 9–11 minutes until golden on top.
Cool on tray for 15 minutes before serving.
Keep butter and eggs cold for best texture.
Do not overbake — centers should be soft.
Freeze extra dough balls and bake as needed.