Line 8 x 8 inch pan with foil.

2 c. milk chocolate pieces
1 tbsp. shortening
1 1/2 c. miniature marshmallows
1 c. coarsely chopped nuts

Melt chocolate and shortening in double boiler. Stir in marshmallows and nuts. Spread in 8 x 8 inch pan lined with foil. Refrigerate 1 hour. Cut in squares.