Peanut Butter Roll Up Candy

1 lb. confectioners sugar
1 stick butter
2 tbsp. sweetened condensed milk
1 tsp. vanilla flavoring
Peanut butter

Mix all ingredients (except peanut butter) together into a well combined mixture and roll out on wax paper, using some confectioners sugar to keep from sticking. Spread peanut butter dough and roll up in jelly roll fashion. Let sit 3 hours in refrigerator, then cut into 1/4 inch slices.