Double Chocolate Chip Cookies

Ingredients (9)

• 1 cup butter, softened
• 1-1/2 cups sugar
• 2 large eggs
• 2 teaspoons vanilla extract
• 2-1/2 cups all-purpose flour
• 3/4 cup baking cocoa
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 2 cups semisweet chocolate chips