2/3  cup (5 oz can) evaporated milk
1-1/2  cups granulated sugar
         2  tablespoons butter
    1/4  teaspoon salt
         2  cups miniature marshmallows
1-1/2   cups (9 oz) semi-sweet chocolate morsels
         1  teaspoon vanilla extract

1.  Line 8-inch square baking pan with foil
2.  Place evaporated milk into medium, heavy-duty saucepan.  Add sugar, butter and salt to saucepan; bring to a full rolling boil over medium heat, stirring constantly.  Boil, stirring constantly, for 4 to 5 minutes.  Remove from heat.
3.  Add marshmallows; stir vigorously until almost melted.  Stir in morsels and vanilla extract until melted.  Pour into prepared baking pan; refrigerate for 2 hours or until firm.  Lift from pan; remove foil.  Cut into 48 pieces.