Place ? cup milk, ? cup melted butter or margarine, ? cup cocoa, and 2 cups sugar into a saucepan and bring to a boil over medium heat, stirring to dissolve sugar. Boil for 1 minute, stirring constantly. Remove from heat, and stir in 1 teaspoon vanilla extract, ? cup peanut butter, and 2 ? cups quick-cooking oats. You may finish these cookies up in a couple of ways. 1) Drop by teaspoonfuls onto waxed paper, and let set up for about ? hour or 2) Pour mixture into a large (13-inch by 9-inch by 2-inch) greased pan and cool, then cut into equally-sized squares. This is a traditional cookie recipe in my part of the country. These cookies are great as snacks for children, and are great as lunchbox items, but big kids like them, too!