Chocolate Gourmand: Peanut Butter Criss-Cross Cookies

Ingredients

• 1 cup butter
• 1 cup sugar
• 1 cup dark brown sugar
• 2 eggs
• 1 teaspoon vanilla extract
• 1 cup natural peanut butter (not hydrogenated)
• 3 cups flour
• 2 teaspoons baking soda
• 1/2 teaspoon salt
• 12 oz. chocolate chips (optional)