Inspired by the famous NYC bakery, these Levain Chocolate Walnut Cookies are massive, thick, gooey, and packed with melty chocolate and toasted nuts.
1 cup (2 sticks) unsalted butter, cold and cubed
¾ cup brown sugar, packed
½ cup granulated sugar
2 large eggs, cold
2 ½ cups all-purpose flour
2 tsp cornstarch
½ tsp baking soda
½ tsp baking powder
¾ tsp salt
2 cups semi-sweet chocolate chunks
1 ½ cups chopped walnuts (toasted)
Preheat oven to 400°F. Line baking sheets with parchment paper.
Beat cold butter with both sugars until just combined.
Add eggs one at a time, mixing until blended.
Whisk together flour, cornstarch, baking soda, baking powder, and salt. Add to wet ingredients and mix until dough forms.
Fold in chocolate and walnuts.
Divide into 8 large dough mounds (about 6 oz each). Do not flatten. Chill for 30 minutes.
Bake 10–12 minutes until golden on top and just set in the center.
Let cool on pan 10 minutes before serving.
For best results, bake from cold dough. Can freeze unbaked for up to 3 months. Serve warm or reheat in microwave for 10 seconds.