My grandma's peanut butter fudge icing

Here is my grandma's peanut butter fudge icing to go on top of the boiled raisin cake.

2 cups sugar
2-3 tablespoons of cocoa
3/4 cup milk

cook it until it starts to thicken up, let it cool slightly and the peanut butter until it is spreadable. You can use smooth or chunky style of peanut butter.


Enjoy!