Chocolate white chocolate chip cookies

• ½  cup butter, softened
• ½  cup crisco
• ¾  cup white sugar
• ¾  cup 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 white chocolate chips
• 1/2 cup chopped walnuts (optional) 

DIRECTIONS

1. Preheat oven to 350 degrees F (175 degrees C).
2. 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.
3. 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.