I'm not sure why they're called oopsie rolls, but these almost-zero-carb "rolls" are flourless and gluten-free, and they are all over the low-carb blogosphere, so of course I had to try them. While not truly bread (they are softer and spongier and are more like a thick savory crepe in texture), they can definitely fill a void for someone who misses sandwiches, or holding a burger in their hands.
Their texture is actually fairly similar to spongy white bread or bun, and their taste is neutral, so they can go with either savory dishes (sandwiches, burgers) or dessert (just like crepes, you could fill them with whipped cream and berries). My only complaint is that oopsie rolls are on the delicate side and tear quite easily, so using them as a bun substitute for a burger is even messier than usual.