Line 8-inch-square baking pan with parchment paper
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, chocolate chips, and vanilla extract.
Stir vigorously for 1 minute or until marshmallows are melted.
Pour into a prepared baking pan; refrigerate for 2 hours or until firm.
Lift from pan; remove foil. Cut into 36-48 pieces.
Notes
FOR MILK CHOCOLATE FUDGE: SUBSTITUTE 1 ¾ cups (11.5-oz. pkg.) NESTLE® TOLL HOUSE® Milk Chocolate Morsels for Semi-Sweet Chocolate Morsels.
FOR BUTTERSCOTCH FUDGE: SUBSTITUTE 1 ⅔ cups (11-oz. pkg.) NESTLE® TOLL HOUSE® Butterscotch Flavored Morsels for Semi-Sweet Chocolate Morsels.
FOR PEANUTTY CHOCOLATE FUDGE: SUBSTITUTE 1 ⅔ cups (11-oz. pkg.) NESTLE® TOLL HOUSE® Peanut Butter & Milk Chocolate Morsels for Semi-Sweet Chocolate Morsels and ½ cup chopped peanuts for pecans or walnuts.