12 oz Butterscotch chips
1/2 c  Chunky peanut butter
2/3 c  Sweetened condensed milk
1/2 c  Walnuts (chopped)

Combine butterscotch chips and peanut butter in top of
double boiler. Place over, not boiling water until
butterscotch melts; remove from water. Stir until
blended; add milk and stir just until blended. Spread
in foil-lined 8-inch square pan. Press chopped nuts
into surface, if desired, and chill until firm. Cut
into 1-inch squares.