In a large skillet, heat the olive oil over medium heat. Add the chopped onion, minced garlic, and bell pepper. Sauté for about 3-4 minutes until the onion becomes translucent and the garlic is fragrant.

Increase the heat to medium-high. Add the ground beef, breaking it apart with a spatula. Cook until browned, about 5-7 minutes. Drain any excess fat if necessary.

Stir in the Italian seasoning, salt, and pepper. Next, add the rinsed rice and mix well to combine it with the beef and vegetables.

Pour in the beef broth and bring to a boil. Once boiling, reduce the heat to low, cover, and let it simmer for about 18-20 minutes, or until the rice is tender and has absorbed all the liquid.

Gently fold in the frozen mixed vegetables and cook for an additional 5 minutes. Remove from heat, let it rest for a couple of minutes, then garnish with fresh parsley if desired.

Spoon the hearty mixture onto plates or bowls, and enjoy your home-cooked Italian masterpiece!