Powdered Sugar

One of my sisters-in-law sent me this recipe months ago and asked me to make it for her. I knew we would be visiting her soon, so I made it as a surprise. 

I ran out of powdered sugar though...

I had heard how easy it is to make your own from regular granulated sugar. Take a cup of sugar plus a tablespoon of cornstarch or arrowroot powder, and then blend in a blender or food processor for 30 seconds.

Here's my first attempt: 

Not very powdery. 

I had the idea to use the spice and nut grinder to grind it even finer. That worked much better!

The only downside is it will only hold about a half a cup at a time.

I wrote my adjusted recipe on a Post-It note and stuck it to my jar so it will be easy to make next time I need it.