Old fashioned chunk peanut butter fudge

As a special Christmas treat, one of my students gifted me with a handwritten copy of this old-fashioned peanut butter fudge recipe attached to a tin of the fudge.

Ingredients :
1/2 cup butter
2-1/4 cups brown sugar
1/2 cup milk
3/4 cup peanut butter
2 teaspoons vanilla
3-1/2 cups confectioners’ sugar placed in large bowl
Directions :

Melt butter in a medium saucepan over medium heat.
Stir in brown sugar and milk. Bring to a boil and cook only for two minutes, stirring constantly.Proper Boiling
Remove from heat. Whisk in peanut butter and vanilla.
Immediately pour over confectioners’ sugar. Beat until smooth with an electric mixer.
Pour into prepared 8 x 8 pan and smooth the top.
Chill until firm and cut into squares. Store in refrigerator.
Smooth the top just a bit and sprinkle on finely chopped honey roasted or salted peanuts. Push peanuts into the fudge so they adhere.