Double Chocolate Chip Cookies

Ingredients

• 2 cups flour
• 1/3 cup cocoa powder
• 1 teaspoon baking soda
• ¼ teaspoon salt
• 1 cup butter
• 1 cup sugar
• 2/3 cup brown sugar
• 2 eggs
• 2 teaspoons vanilla
• 1 1/3 cups chocolate chips
• 4 ounces white chocolate cut into pieces
• 1 cup macadamia nuts (optional)