Cook rice according to package instructions, you will need to measure out 2 cups.
Place cooked brown rice, red onion, black beans, lime juice, cumin, garlic powder, sea salt, paprika, and 1 cup of cheese in a bowl, stir to combine
Cut tops off of peppers and remove inner seeds and ribs
Place peppers in crockpot and distribute filling evenly
Pour 1/2 cup of water into bottom of crockpot so the peppers are sitting in the water
Cook on high for 2 1/2 to 3 hours
In the last 10 minutes, remove lid and top peppers with additional cheese. Cover and allow cheese to melt
Serve topped with hot sauce or salsa, fresh lime juice, sour cream, and tortilla chips