1/2 cup butter
2 cups brown sugar
1/2 cup Milk
1cup Peanut Butter
1 teaspoon of vanilla
3 cups confectioners sugar

Melt butter in medium saucepan over medium heat, stir in brown sugar and milk, bring to a boil and boil for 2 minutes , stirring frequently. Remove from heat, stir in vanilla and peanut butter, pour this over the confectioners sugar in a large mixing bowl, beat until smooth, pour into 8x8 inch pan and chill until firm, cut into squares.