- Line all three 9×13 pans with parchment paper and lightly grease the sides to prevent sticking. Set them aside.
- Place a large heavy-bottom pot on medium heat and add the sugar and milk. Stir continuously as the mixture warms to ensure the sugar dissolves completely.
- Bring the mixture to a gentle boil while stirring. Once boiling, continue cooking for about 6 minutes. If using a candy thermometer, aim for 234–238°F (soft-ball stage). This step helps the fudge set properly.
- Remove the pot from heat and immediately add the butter cubes. Stir until they melt fully and the mixture becomes smooth.
- Add the peanut butter next. Mix until it blends evenly with the hot mixture, forming a thick, creamy base.
- Scoop the marshmallow cream into the pot. Fold it in slowly until the fudge turns glossy and uniform with no visible streaks.
- Add vanilla extract and salt. Stir one final time to distribute the flavors evenly throughout the fudge.
- Pour the hot fudge mixture into the first lined pan. Smooth the surface with a spatula.
- Repeat the same pouring and smoothing process for the remaining two pans until all the fudge is divided evenly.
- Allow the pans to cool at room temperature for at least 3–4 hours. Avoid refrigerating immediately, as rapid cooling can cause the texture to become grainy.
- Once firm, lift the fudge out using the parchment paper. Transfer it to a cutting board and slice it into squares or rectangles.
- Store the fudge in airtight containers. It keeps well at room temperature for up to a week or in the freezer for up to two months.
Tips or Serving Suggestions
For a deeper peanut flavor, swirl an extra spoonful of peanut butter on top of each batch before it cools. If you prefer a sweet-salty contrast, sprinkle a light pinch of flaky sea salt over the warm fudge. To add crunch, mix in chopped peanuts or crushed pretzels right before pouring the mixture into the pans. This recipe also makes wonderful holiday gifts—wrap pieces in parchment, add a ribbon, and pack them into small boxes for a delicious homemade touch.
This triple-sized peanut butter fudge recipe delivers smooth, satisfying bites every time. With simple steps, classic ingredients, and a bit of patience, you’ll create enough creamy fudge to share generously—or keep all to yourself! Enjoy every melt-in-your-mouth moment.
