I caught a few minutes of "Nigella Bites" on the Food Network this weekend. I used to watch her show years ago, and had a few of her cookbooks, she is the best, if you've never heard of her - Google her, look for her, read her books, you will not regret it. She makes amazing food.
So in the few minutes I caught her show, I happened to tune into a quick & easy "working woman" soup which was great, because I wanted soup yesterday and had barely any groceries, and lucky me - it was gluten free (didn't mean to rhyme there, but how cute).
All it is, and you may have done this before, but I think it's genius, is a jar of pasta sauce, I have a tomato basil brand I love - dump it into a pan, add boiling water, and rice - and voila, Tomato & Rice soup.
I think the key here is a really great jar of tomato sauce, since that is where you get your whole flavor. I also added a can of crushed tomatoes, and some chicken stock (because i love salt), and a little extra basil & topped with parmesan cheese. YUM. And it took about 2 minutes to prepare, and 15ish to cook.
Also - Nigella has contributed to "The Gluten-Free Bible.." and has some great gluten free recipes, especially desserts for example see here