Velveeta Peanut Butter Fudge

1/2 pound Velveeta cheese
2 pounds confectioners' sugar
3/4 cup (1 1/2 sticks) butter
1 tablespoon vanilla extract
1 cup peanut butter

Melt first 3 ingredients together in microwave. Add remaining ingredients. Knead like bread dough until you can no longer see the sugar. Roll candy with a glass. Spread into greased pan. Refrigerate until set.