1. Line an 8×8 or 9×9 inch pan with parchment paper for easy removal.
2. Chop Butterfinger bars and Reese’s peanut butter cups into small pieces and set aside.
3. In a microwave-safe bowl or saucepan, combine white chocolate chips, sweetened condensed milk, and butter.
4. If using the microwave, heat in 30-second intervals, stirring between each, until smooth and fully melted.
5. If using the stovetop, melt over low heat, stirring continuously until smooth.
6. Remove from heat and quickly stir in most of the chopped candy, reserving some for topping.
7. Pour the fudge mixture into the prepared pan, spreading evenly with a spatula.
8. Sprinkle the reserved chopped candy on top, lightly pressing it into the fudge.
9. Let the fudge cool at room temperature or refrigerate for 2-3 hours until fully set.
10. Once set, lift the fudge from the pan using parchment paper and place it on a cutting board.
11. Cut into small squares using a sharp knife.
12. Serve immediately or store in an airtight container in the refrigerator for up to 1-2 weeks.
13. For longer storage, keep fudge in the freezer in a sealed container.
14. Package in treat boxes or wrap for gifting if desired.
15. Enjoy the creamy, crunchy, and flavorful Butterfinger Reese’s Fudge!