*I have not been able to find a gluten free vegetarian ground beef substitute so making it with the meatless ground round means that it won't be gluten free. **ensure that the taco seasoning you use is gluten free. Most are not. I use VE which is gluten free or I have found a tex mex seasoning that is also gluten free. Alternatively, you can make your own.
The filling is pretty delicious on its own and even better with some hot sauce sprinkled on so if you have any leftover filling when you're stuffing the peppers, you can eat just the filling.
I really do recommend making this in a multiple batch and freezing as then you will only have to brown the meat, make the rice and make the filling once.