Peanut butter fudge with condensed milk and marshmallow creme

Condensed milk is the perfect ingredient to use when making fudge since it is known for its creamy and thick texture. If condensed milk is not available, evaporated milk can work as a substitute. While the fudge won't be as sweet, alternative sweeteners can be used and still have a similar consistency and flavor.

What causes peanut butter fudge not to harden? Fudge not setting is often caused by the fudge mixture not getting hot enough or not being cooked for long enough. If it's really soft, you can try to reheat it, adding a little more milk. Bring it slowly back to a boil then try again - it should set firmer.

Instead of adding evaporated milk, add some powdered sugar and remix your fudge batter. The powdered sugar can help the fudge set and harden if it is resistant to doing so. Add a mixture of water and cornstarch. First, combine water and cornstarch (1:1) and mix thoroughly according to package instructions.

Once a seed crystal forms, it grows bigger and bigger as the fudge cools. A lot of big crystals in fudge makes it grainy. By letting the fudge cool without stirring, you avoid creating seed crystals.