Peanut Butter Fudge

3 cups sugar
1 T cocoa
3/4 cup water
1 stick butter
1 T vanilla extract
1 cup smooth peanut butter

Mix sugar and cocoa in a mixing bowl. Boil water. Reduce heat on water to medium and add sugar/cocoa and mix. Reduce heat to low and stir in butter and and vanilla. Once heated through take off the heat and stir in peanut butter til blended well. Place in a 9x9x2in greased pan. Let cool before serving.