1 stick butter (1/2 cup)
1/2 cup Pet (evaporated) milk
1 teaspoon vanilla
2 1/2 tablespoons cocoa
1/2 cup peanut butter
3 cups oats
In a medium saucepan, combine all ingredients except peanut butter and oats and cook over medium heat.
Let boil for 5 minutes, stirring constantly.
Remove from heat and stir in peanut butter and oats.
Spoon out quickly onto wax paper or aluminum foil.
Cookies will harden as they set.