Ingredients

1 cup butter, softened

1 cup white sugar

1/2 cup packed brown sugar

2 eggs

2 teaspoons vanilla extract

2 cups all-purpose flour

2/3 cup cocoa powder

3/4 teaspoon baking soda

1/4 teaspoon salt

2 cups semisweet chocolate chips

Directions

Preheat oven to 350 degrees F (175 degrees C).

In large bowl, beat butter, sugar, eggs, and vanilla until light and fluffy. Combine the flour, cocoa, baking soda, and salt; stir into the butter mixture until well blended. Mix in the chocolate chips and walnuts. Drop by rounded teaspoonfuls onto ungreased cookie sheets.

Bake for 8 to 10 minutes in the preheated oven, or just until set. Cool slightly on the cookie sheets before transferring to wire racks to cool completely.