3- Stuff the peppers with the filling you just made. If there is any leftover filling add it to the bottom of the slow cooker.
4- Add remaining marinara sauce to the slow cooker.
5- Add the stuffed peppers in the slow cooker. I try not to let them rest on the sides of the slow cooker, but most of the time they end up falling over later.
6- Cover and cook on LOW for 5 hours without opening the lid during the cooking time.
Notes:
Can I add cheese to this?
Stuffed peppers often have cheese on top, though adding cheese is optional.
If you want a cheese fix, add about 2 tablespoons of shredded mozzarella cheese to each pepper 10 minutes before the cooking time is up.
Can a different type of meat be used?
Ground turkey
Ground chicken
Ground Italian sausage
Can I make this vegan?
Use soy crumbles instead of beef
Or a can of pinto beans
Or add extra veggies such as chopped squash or asparagus to the rice mixture.