Preheat your oven to 375 degrees Fahrenheit and lightly grease a baking dish.

In a large skillet over medium-high heat, brown the ground beef until fully cooked, then drain any excess fat.

Stir the cooked rice, marinara sauce, fresh parsley, and fresh basil into the beef mixture until well combined.

Fill each hollowed-out bell pepper evenly with the beef and rice mixture, pressing down gently.

Top each stuffed pepper generously with shredded mozzarella cheese.

Place the stuffed peppers upright in the baking dish and bake for 30 minutes until the peppers are tender and the cheese is bubbly.