I did that with this deceptively dense and filling rice substitute for my "second breakfast" meal the other day. It was my first time trying risoni. I made about two thirds of the six-serving box, threw in some olive oil and onion salt and started chowing down.
Within minutes I had eaten about half the portion that I made, which if you do the math, is about two full servings of the product. I don't think I'll see any long-term weight gain or anything like that, but in 5 or 10 minutes these legume-based "grains" expanded in my tummy and made it feel FULL as can be, and lemme tell ya, I had some massive postprandial somnolence going on. I could barely function for a few hours. Didn't expect that from a box of chickpeas and lentils.
Full disclosure, I did add some cheese before I finished my portion—er two portions, rather—because I felt it lacked a little zing. I mean it lacked zing the way plain rice lacks zing. It's actually much tastier than I thought it would be.
There's an earthy richness that white rice lacks here, however, both risoni and rice need at least a little bit of salt to be palatable, if you ask me. Texture-wise, it's slightly more al dente than regular rice, but still somewhat soft and supple. Along with olive oil and cheese, this could be a stand-alone meal, or at least a snack. We both think it would go great as a side for chicken or fish, or basically wherever you'd use rice or cauliflower rice or orzo type foods.
$2.99 for the box. Would buy again.
Bottom line: 7.5 out of 10.