I have some leftover buttercream from a few days ago. I need a small amount of chocolate frosting. Can I melt a square or two of baker's chocolate and add it to the already made buttercream? I realize I may have to add additional powdered sugar.

Sorry if this has already been addressed. I had no luck using the Search function.

Thanks!

I add melted chocolate to my SMBC all the time. I just melt it in the microwave. Let it cool but not harden and mix it into my SMBC.

I add melted white choco all the time without cooling. I like that when I stick the cake in the cooler it becomes stiff and easier to smooth out.

I do it all the time too, without cooling. I just stream it in slowly whilst mixing, so it doesn't melt the butter.

Yes. You can also add cocoa powder or chocolate syrup etc. Just watch your consistency. I slopped together a whole bunch of colored, left over buttercream, some milk, some cocoa powder, some melted Baker's Squares, some left over ice cream fudge topping and it made fabulous chocolate buttercream.