How to Melt Peanut Butter -\u00a0Peanut butter is a popular food in the United States and has a variety of uses. It can be easily melted or liquefied - the secret is to use low heat on the stove or a quick cooking time in the microwave. Use it quickly as it melts, before it cools and hardens again. How to Melt Peanut Butter What do you need \tPeanut butter \tMeasuring cup \t1\/2 cup water \tSkimmer \tMicrowave oven dish \tMixer Instructions \tFill the measuring cup with water. \tPut the peanut butter in the glass, using a spoon, until you have the desired amount plus 1\/2 cup. For example, if your recipe calls for 1\/4 cup peanut butter, add it to the measuring cup filled with water until the water reaches 3\/4 cup. \tSupport the skimmer against the opening of the measuring cup to hold the peanut butter while you pour the water. \tAdd the peanut butter in the pan or microwave container. \tHeat the peanut butter over low heat until it melts thoroughly, mixing all the time. Another option is to heat it in the microwave at high temperature for 30 seconds or until it melts.