Mine is similar. 1/2 favorite meatloaf recipe, mix with 1c cooked rice, slice tops off of peppers, clean out and fill. Pour I small can diced tomatoes with juice over the peppers, Bake at 350 until done.
Same here but I used the 10 min boiling bag rice and use 3 cans of tomato soup! makes them really good!
Mine is similar to yours, except I caramelize onions, add to the meatloaf mixed 50/50 w/cooked rice and the sauce is 1/2 ketchup/1/2 brown sugar stirred together and allowed to sit for a bit so the sugar blends with the moisture from the ketchup. I add some of the sauce to the meat/onion/rice mixture before stuffing and pour over some more sauce. Any excess sauce can be served on the side.It has a BBQ flavor.
You can shorten the cooking time by partially browning the meat mixture before combining, in the hot pan, with onions, cooked rice and enough sauce to prevent sticking. Stir everything together for a couple of minutes to blend. It will be a looser mixture, more like Sloppy Joes than Salisbury Steak.
Add 1” of water to bottom of the roasting pan to insure the peppers steam through.