1 1/2 c. chocolate chips
1/2 c. chunky peanut butter
2 tbsp. butter
36 lg. marshmallows
1/2 c. chopped nuts

In heavy saucepan, combine chocolate chips, peanut butter and butter, heat, stirring occasionally until melted. Place marshmallows on end in 8" square pan. Pour chocolate mixture over marshmallows. Sprinkle with nuts. Chill until firm. Cut into 36 puff squares.