No Bake Chocolate Oatmeal Cookies

1 stick margarine (melted)
2 cups sugar
2/3 cup milk
3 Tbsp. cocoa
1/2 cup peanut butter
3 cups oats

Melt margarine, add sugar, milk, and cocoa. Bring to a boil, (stirring constantly) cook for 2 minutes. Remove from heat add peanut butter, mix well. Add oats, mix well. Drop by spoonfuls on wax paper to cool.