Follow these steps to turn the ingredients into luscious fudge:

1. Prepare the pan. Line an 8×8‑inch (20×20 cm) baking dish with parchment paper, allowing some overhang on the sides. This will help you lift the fudge out later.
2. Combine ingredients. In a medium, heat‑safe bowl, place the 22 oz of butterscotch morsels along with 14 oz sweetened condensed milk and the ¼ teaspoon salt.
3. Microwave to melt. Microwave in 30‑second intervals, stirring well after each interval, until the mixture becomes completely melted and smooth. In our test, two 30‑second intervals were sufficient, but yours may need more depending on your microwave’s power.
4. Pour into pan. Once the mixture is glossy and well combined, pour it into the prepared baking dish and spread it evenly with a spatula or the back of a spoon.
5. Chill to set. Place the dish into the refrigerator and chill for about 2 hours, or until the fudge is firm.
6. Score and slice. If desired, when the fudge is partly set but still slightly warm, you can score a grid on its surface (gently press lines) to make slicing cleaner once fully set. After chilling, lift the parchment, transfer to a cutting board, and slice into 25 equal pieces (a 5×5 grid) before serving.