Blend all ingredients (except chocolate) in a mixer or food processor until smooth.
Melt the chocolate chips in the microwave. DO NOT OVER-HEAT THEM...it makes them gritty and tough. I always start with a minute, stir and do 20-30 second increments after that. When about 2/3 are melted, I just keep stirring until all are melted.
Line a muffin tin (all I had was large paper muffin liners, but these would be perfect in mini muffins too).
Pour a tablespoon or so of melted chocolate into paper liner, and brush the chocolate up the sides, no need to be exact (anyone who knows me knows I am more about taste than looks, not patient enough for the pretty details!) The chocolate will harden almost instantly as you brush it up the sides.
Fill with the sunbutter filling, and place in the freezer.
Store under refrigeration or in the freezer! You could always use a zester to put some pretty chocolate curls on top, or a few extra chocolate chips.
Another simplified way is to do the whole seed butter mixture in an 8 x 8 pan and spread the melted chocolate over the top.