Cut the mini sweet peppers in half and remove the rib and seeds. Set aside.
Add rice and water to a pot and bring to a boil. Drop to a simmer, place a lid on the pot, and allow rice to cook until fluffy, 15-20 minutes.
While rice cooks, add the beans, onion, cumin, paprika, garlic powder, and crushed tomatoes to mixing bowl.
When the rice is cooked and still warm, stir in the black bean mixture.
Preheat the oven to 350 degrees and prepare two baking sheets with parchment paper.
Fill each pepper half with the rice mixture. Then, sprinkle a little shredded cheddar cheese on top.
Cook for 20 minutes, or until the cheese has melted.
Top with sour cream, chopped scallions, and hot sauce, if desired.