Place individual brownies in small candy cups or decorative paper cupcake liners.
Make ganache frosting. In small glass bowl, heat heavy cream in microwave for 3-5 minutes or until it is very warm.
Remove from microwave, add chocolate chips, stir until thickened for frosting.
Chill 3-5 minutes to help with thickening process if necessary.
Place in mixing bowl with beater attachment, beat on high speed until ganache whips to frosting state. If you need to add confectioners sugar, add a tablespoon at a time, but usually you will not need it.
Place frosting in disposable piping bag with tip # `1 M.
Pipe tops of brownies in a swirl motion.
Store in covered container until serving or pack in a tin for gift giving.
Brownies are best served the day you pipe them. I
f you want to make them ahead place brownies in freezer after purchase. Right before serving, thaw and pipe with ganache frosting.