Step 1: Preheat oven to 375°F (190°C).
Step 2: In a large skillet, heat olive oil over medium heat. Add ground beef and cook until browned, about 5-7 minutes.
Step 3: Add onion, garlic, and bell pepper to the skillet. Cook for 3-4 minutes until vegetables soften.
Step 4: Stir in rice, diced tomatoes with juice, beef broth, oregano, paprika, salt, and pepper. Bring to a simmer.
Step 5: Transfer mixture to a 9×13-inch baking dish. Cover tightly with foil.
Step 6: Bake for 25 minutes until rice is tender and liquid is absorbed.
Step 7: Remove foil, sprinkle with shredded cheese, and bake uncovered for 5 more minutes until cheese melts.
Step 8: Let rest for 5 minutes before serving.