These bakery-style Levain Chocolate Walnut Cookies are thick, gooey-centered, and packed with melty chocolate and toasted walnuts — just like the famous NYC original
1 cup (2 sticks) cold unsalted butter, cubed
¾ cup brown sugar
½ cup granulated sugar
2 cold large eggs
2¼ cups all-purpose flour
2 tsp cornstarch (optional)
1 tsp baking powder
½ tsp baking soda
½ tsp salt
1½ cups semi-sweet chocolate chunks
1½ cups toasted walnuts, chopped
1 tsp vanilla extract (optional)
Preheat oven to 410°F (210°C).
Beat cold cubed butter with both sugars until just combined.
Add cold eggs, one at a time. Mix in vanilla if using.
In another bowl, whisk flour, cornstarch, baking powder, baking soda, and salt. Add to wet ingredients.
Fold in chocolate and walnuts.
Form 6–8 large dough balls (about 6 oz each). Chill for 30–60 minutes.
Bake 9–11 minutes until edges are golden and centers appear slightly underbaked.
Let rest 10 minutes before serving.
For extra gooey centers, underbake slightly.
Freeze unbaked dough for up to 3 months.
Use dark chocolate or different nuts to customize.