Mary's Chocolate Oatmeal Cookies

1/4 lb. butter
1/2 c. milk
1/3 c. cocoa
2 c. sugar
1/2 c. peanut butter
1 t. vanilla
3 c. oatmeal

Combine first 4 ingredients and boil 1 minute. Add other ingredients. Drop onto cookie sheets to cool. *Some people call these cow patties.