Step 1Break the chocolate into pieces and place it in a heatproof bowl over a small saucepan filled with about a cup of water. Melt the chocolate over medium heat, ensuring that the bowl does not touch the water but is heated through steam. Once melted, remove from heat and allow to cool.
Step 2Gently heat the peanut butter (on the stove or in a microwave), stirring until it is smooth and lump-free.