Cut the tops of the peppers off and discard the seeds and stems, but save the pepper portion of the tops and dice. Reserve 1/2 cup for the filling.
Combine the diced peppers, raw ground beef, onion, steak sauce, tomato sauce and rice in a large bowl and stir to combine. Season with salt and pepper to taste. Stuff each pepper with the ground beef mixture and place in the crock pot.
Pour about 1/4 cup of water into the bottom of the crock pot and cover. Cook on low 6 to 8 hours or HIGH for 4 hours. Just before serving top with the shredded cheese and cover until melted. Enjoy!
Notes
The bottom of the slow cooker will have quite a bit of water after cooking from the peppers releasing their water. Use a slotted spoon to pick up the peppers and let drain before plating.