Not So Sweet Chocolate Buttercream

4 In the microwave melt the semi-sweet chocolate chips in thirty second increments and for no longer than one minute. Set aside to slightly cool.
0 On medium speed, beat together the butter and cream cheese until smooth and fully incorporated.
1 In a separate bowl sift together the powdered sugar, cocoa powder, meringue powder, corn starch, and salt.
2 On low to medium speed, add 1 cup of the chocolate powdered sugar mixture to the cream cheese mixture at a time, scraping down the bowl between each cup.
3 Once all the powdered sugar mixture is incorporated, drizzle in the melted semi-sweet chocolate.
5 On low to medium speed beat for 2 to 3 minutes or until combined.
6 Refrigerate in a piping bag or air tight glass container until you are ready to use.