Chocolate Peanut-Butter No Bake Cookies

2 cups sugar
4 tablespoons cocoa
1 stick butter
1/2 cup milk
1 cup peanut butter
1 tablespoon vanilla
3 cups oatmeal
Waxed paper

In a heavy saucepan bring to a boil, the sugar, cocoa, butter and milk. Let boil for 1 minute then add peanut butter, vanilla and oatmeal. On a sheet of waxed paper, drop mixture by the teaspoonfuls, until cooled and hardened.