Line 8-inch-square baking pan with foil. Butter lightly.
Step 2
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.
Step 3
Stir in marshmallows, chocolate chips and vanilla extract. Stir vigorously for 1 minute or until marshmallows are melted. Stir in 1 cup Butterfinger Bites. Pour into prepared baking pan; sprinkle 1/4 Butterfinger Bites on the top. Refrigerate for 2 hours or until firm. Lift from pan; remove foil. Cut into 48 pieces.