Easy Cheddar-Crusted Ground Beef and Rice Casserole

Ingredients

• 1 pound ground beef
• 1 tablespoon olive oil (optional)
• 1 small onion, diced
• 1 red bell pepper, diced (optional)
• 3 cloves garlic, minced
• 1 teaspoon smoked paprika
• 1 teaspoon dried oregano
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1 cup uncooked white or brown rice
• 2 cups beef broth (or chicken broth)
• 1 cup canned diced tomatoes (with juice)
• 1 cup frozen corn or peas (optional)
• 1 1/2 cups shredded sharp cheddar cheese
• 1/2 cup panko breadcrumbs
• 1 tablespoon butter, melted