Cream of Something soup, instead of the Campbell's Cream of Chicken, Cream of Celery, etc.
I made a big batch of the powder and anytime something calls for one of those soups I make up that mixture instead. I used this recipe, although I left out the bouillon and instead of water I use left over broth that I drain and save from when I give my kids soup. I also left out the onions because I didn't have any and don't really like them.
It is really good, the first time I made it I didn't cook the mixture long enough before adding it to my recipe, so we could taste the corn starch, but the next time it was better.