Mix the peanut butter and the icing sugar. Roll the mix into small balls. Press the balls lightly.
Melt the chocolate in the microwave or over simmering water. Fill the candy cups half full with chocolate and press the peanut butter balls into the chocolate. Cover with chocolate. Let set in the fridge for at least 30 minutes.
You can temper the chocolate if you want it to set in the room temperature. Heat the chocolate into 45 degrees celsius (113 °F), then cool into 26 degrees (78.8 °F) and heat to 30 degrees (86 °F) and it’s ready to use.