LINE 8-INCH-SQUARE BAKING PAN WITH FOIL. COMBINE SUGAR, EVAPORATED MILK, BUTTER AND SALT IN MEDIUM, HEAVY-DUTY SAUCEPAN. BRING TO A FULL ROLLING BOIL OVER MEDIUM HEAT, STIRRING CONSTANTLY. BOIL, STIRRING CONSTANTLY, FOR 4 TO 5 MINUTES. REMOVE FROM HEAT.
STIR IN MARSHMALLOWS, MORSELS, NUTS AND VANILLA EXTRACT. STIR VIGOROUSLY FOR 1 MINUTE OR UNTIL MARSHMALLOWS ARE MELTED. POUR INTO PREPARED BAKING PAN; REFRIGERATE FOR 2 HOURS OR UNTIL FIRM. LIFT FROM PAN; REMOVE FOIL. CUT INTO 48 PIECES.
FOR MILK CHOCOLATE FUDGE:
SUBSTITUTE 1 3/4 CUPS (11.5-OZ. PKG.) NESTLÉ® TOLL HOUSE® MILK CHOCOLATE MORSELS FOR SEMI-SWEET MORSELS.
FOR BUTTERSCOTCH FUDGE:
SUBSTITUTE 1 2/3 CUPS (11-OZ. PKG.) NESTLÉ® TOLL HOUSE® BUTTERSCOTCH FLAVORED MORSELS FOR SEMI-SWEET MORSELS.