How do I know when peanut butter fudge is done cooking?
Cook the mixture to the soft-ball stage (235–240°F on a candy thermometer), or until a small spoonful dropped in cold water forms a soft ball that flattens when removed.
Why is my fudge grainy instead of smooth?
Grainy fudge typically results from cooking at too high a temperature or not stirring enough during cooling. Use a candy thermometer and stir gently once the mixture has cooled slightly.
Can I use chunky peanut butter instead of creamy?
Yes, chunky peanut butter works well and adds texture. The fudge will have peanut pieces throughout but will still set properly.
How long does homemade peanut butter fudge keep?
Store in an airtight container at room temperature for up to two weeks, or refrigerate for up to one month.
Can I double this recipe?
Yes, double all ingredients. Monitor the temperature carefully with a candy thermometer, as larger batches may cook slightly slower.