Preheat your oven to 375°F (190°C). If you forget this, you’ll be that person who preheats for two hours. Don’t be that person.
Slice the tops off the peppers and remove seeds. If they squeak, you’re doing great. Rinse and set aside.
In a skillet, heat olive oil over medium heat. Sauté onion until translucent, about 4 minutes. Add garlic and cook 1 minute more. Aroma: 100% appetizer magic.
Stir in cooked rice, turkey (or lentils), diced tomatoes, oregano, paprika, and cumin. Simmer 3–5 minutes. Season with salt and pepper. Taste test: mandatory and heroic.
Stuff the peppers with the filling. Place them upright in a baking dish. If one tries to roll, give it a pep talk and set it upright again.
Cover with foil and bake 30 minutes. Uncover, sprinkle cheese on top, and bake another 10 minutes until bubbly and lightly caramelized on the edges.