I make my peanut butter cups with dark chocolate chip, but feel free to use any chocolate you wish. As for the peanut butter, use natural peanut butter, or a similar product without all the added sugar which can make your peanut butter cups cloyingly sweet.
Makes: 12 cups (so make sure you've got 12 paper muffin cups on hand)
1 cup creamy natural peanut butter
1/2 icing sugar
1 1/2 cup chocolate chips
1/8 tsp salt (optional, but makes them taste better)
Melt chocolate chips either on low heat on the stove top or in a microwave.
Spread half the melted chocolate evenly around the sides and the bottom of the 12 muffin cups. I find this can be done easily with a small spoon if you hold the muffin cup in you hand and spin it while spreading the chocolate around.
Place the paper muffin cups in a muffin pan and place in the freezer for a minimum of 20 minutes.
While the chocolate is hardening in a small bowl cream the peanut butter with the sugar (can be sifted to avoid sugar chunks, unless you are too lazy like me) and salt. If the mixture is a bit stiff due to stiff peanut butter, you can add a dollop of margarine to the mixture.
In hardened-chocolate cups, distribute the peanut butter mixture evenly, spreading it flat with a spoon or by banging the muffin pan on the counter.
Refreeze the peanut butter cups for about 20 more minutes before spreading on the top layer of chocolate.
After all the chocolate has been smoothed out, refreeze the peanut butter cups for 1 hour.
Store in the freezer afterwards and let them thaw for a few minutes before nibbling.