Steps
Preheat your oven to 375°F (190°C).
Cut the top off the bell pepper and remove seeds.
In a bowl, mix the cooked quinoa, chopped spinach, black beans, diced tomatoes, cumin, olive oil, salt, and pepper.
Stuff the bell pepper with the quinoa mixture, pressing down gently to pack it.
Place the stuffed pepper upright in a baking dish and cover with foil.
Bake for 25-30 minutes until the pepper is tender.
If desired, sprinkle nutritional yeast on top before serving.