Step 1

Preheat oven to 350°F. Stir together butter and sugars in a large bowl until well mixed. Stir in extract and eggs.

Step 2

Stir together flour, baking soda and salt in a medium bowl, then stir into butter mixture, Stir in chocolate chips and walnuts.

Step 3

Using a 1 1/2-inch scoop, drop level scoops onto parchment-lined baking sheets and flatten slightly with the back of the scoop.

Step 4

Bake for 10 minutes. Let cool completely on baking sheets.

Step 5

Variation: Stir 3 tablespoons unsweetened cocoa powder into cookie dough and substitute white chocolate chips for dark chocolate chips.