I purchased several of the MakeYourGear.com Bowl Bags when I made my first (of many to come) order from Dutch's new DIY website.
From the site: "This is a special high temperature, food safe bag designed by Make Your Gear. It is made to open up like a bowl and has a low profile so you don't need that extra long spoon. The 6 inch gusset on the bottom allows the bag to open wide and we have removed all the hard corners so it's easy to mix. This is designed to pour boiling water in to and cook your food directly in the bag. This is a ziplock style bag and heat sealable with a tear strip added for convenience."
The bags are stout, as thick as or maybe a little thicker than a standard freezer storage bag. With the gusseted bottom, the bags are stable on a flat surface. We used them on our last one night outing. For my evening meal, I made a Knorr's rice side meal and added a foil pack of Tyson's chicken. I poured the Knorr's into my Bowl Bag, boiled my water and added it, and sealed it using the zip-top enclosure. I didn't have a coozie yet so I placed my meal inside my cookware's "sink" to rehydrate (GSI Halulite Dualist).
The Bowl Bag performed superbly. It was also easy to eat out of the bag because of the shape and gusseted bottom. The next morning, using a fresh bag because we didn't feel like cleaning dishes hehe, I made my oatmeal the same way.
My wife prepared her meals in the Bowl Bags as well and was satisfied with their performance.
On an extended trip where weight matters, I will carry one bag and re-use it for my hot meals, cleaning it between uses. A great lightweight alternative to plastic bowls and the like and very packable, and saves your cookware from icky messes.
I'm sure the Bowl Bag Bivys on the website work great, but I'm thinking a cheaper DIY version with Reflectix.
When we got home I washed out the bags and plan on using them over and over- I'm sure there will be a limit but they are very sturdy for what they are, and a bargain at $0.60 each. Dutch scores again!