In a medium bowl, combine 1 pound lean ground beef, 1/3 cup freshly grated parmesan cheese, 1/2 Tablespoon garlic powder, 1/2 Tablespoon onion powder, 1/4 teaspoon kosher salt and 1/4 teaspoon black pepper until well mixed.
In a large skillet with deep sides over medium-high heat, add the ground beef mixture, 1 green bell pepper, small diced and 1 small sweet onion, small diced and cook until the beef is no longer pink, breaking it up into crumbles. Drain any excess grease.
Add 2 cloves garlic, minced and cook for 1 minute, until fragrant.
Add 2 cups beef broth and 32 ounce jar marinara sauce, stirring to combine. Bring to a boil.
Add 1 cup long grain white rice and stir it in.
Reduce the heat to low, cover, and simmer (don't boil) for about 25-30 minutes.
Stir it about every 10 minutes to make sure nothing is sticking to the bottom. It is done when the rice is tender and most of the liquid is evaporated.
Take off the heat, add one cup shredded mozzarella cheese and stir it in.
Sprinkle the remaining cup of shredded mozzarella cheese on top, cover, and let it melt.
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.